• WordNet 3.6
    • n affinity a natural attraction or feeling of kinship "an affinity for politics","the mysterious affinity between them","James's affinity with Sam"
    • n affinity inherent resemblance between persons or things
    • n affinity the force attracting atoms to each other and binding them together in a molecule "basic dyes have an affinity for wool and silk"
    • n affinity (immunology) the attraction between an antigen and an antibody
    • n affinity a close connection marked by community of interests or similarity in nature or character "found a natural affinity with the immigrants","felt a deep kinship with the other students","anthropology's kinship with the humanities"
    • n affinity (biology) state of relationship between organisms or groups of organisms resulting in resemblance in structure or structural parts "in anatomical structure prehistoric man shows close affinity with modern humans"
    • n affinity (anthropology) kinship by marriage or adoption; not a blood relationship
    • ***
Webster's Revised Unabridged Dictionary
    • Affinity (Nat. Hist) A relation between species or higher groups dependent on resemblance in the whole plan of structure, and indicating community of origin.
    • Affinity (Spiritualism) A superior spiritual relationship or attraction held to exist sometimes between persons, esp. persons of the opposite sex; also, the man or woman who exerts such psychical or spiritual attraction.
    • Affinity Companionship; acquaintance. "About forty years past, I began a happy affinity with William Cranmer."
    • Affinity Kinship generally; close agreement; relation; conformity; resemblance; connection; as, the affinity of sounds, of colors, or of languages. "There is a close affinity between imposture and credulity."
    • Affinity Relationship by marriage (as between a husband and his wife's blood relations, or between a wife and her husband's blood relations); -- in contradistinction to consanguinity, or relationship by blood; -- followed by with to, or between. "Solomon made affinity with Pharaoh."
    • Affinity (Chem) That attraction which takes place, at an insensible distance, between the heterogeneous particles of bodies, and unites them to form chemical compounds; chemism; chemical or elective affinity or attraction.
    • ***
Century Dictionary and Cyclopedia
    • n affinity An artificial relationship between persons of different blood, regarded as analogous to consanguinity; the relation between families or individuals created by intermarriage (excluding that between the married persons), by legal adoption, or by sponsorship; more especially, the relation between a husband or wife and the kindred of the other spouse. In the Jewish, Roman, and canon laws, affinity by marriage or adoption is a bar to marriage within certain degrees, equally with consanguinity; and on this ground rests the prohibition of marriage with a deceased wife's sister in Great Britain. The canon law treats unlawful sexual intercourse as creating the same affinity with marriage. The relationship of godparents and godchildren, called spiritual affinity, is not now considered a bar to marriage, as it was before the Council of Trent, which made no provision on the subject.
    • n affinity Intercourse; acquaintance; companionship.
    • n affinity Hence A natural liking for, or attraction to, a person or thing; a natural drawing or inclination; an inherent mutual liking or attraction.
    • n affinity Inherent likeness or agreement as between things; essential or specific conformity; intimate resemblance or connection.
    • n affinity In chem., that force by which the atoms of bodies of dissimilar nature unite in certain definite proportions to form a compound different in its nature from any of its constituents: called distinctively chemical or elective affinity. The word has lost its original meaning, and now signifies nothing more than chemical force. See chemical.
    • n affinity In biology, morphological and implied genetic relationship, resulting in a resemblance in general plan or structure, or in the essential structural parts, existing between two organisms or groups of organisms; true and near structural relationship, predicable of two or more organisms morphologically related, however diverse physiologically.
    • n affinity In psychology, that in ideas which renders them capable of being associated in the mind, as their similarity or coadjacency. The law of the affinity of ideas is another name for the law of continuity of notions, according to which two notions cannot be so similar but that it is possible to find a third intermediate between them.
    • n affinity In geometry, the relationship between two figures in the same plane which correspond to each other, point to point and straight line to straight line, any point of the one lying in a fixed direction from the corresponding point of the other, and at a distance from it proportional to its distance from a fixed line, called the axis of affinity, the direction of which is that of lines joining corresponding points.
    • n affinity In projective geometry, a perspective of which the center is at an infinite distance.
    • ***
Chambers's Twentieth Century Dictionary
    • n Affinity af-fin′i-ti nearness of kin, agreement, or resemblance: causal relationship: structural resemblance between languages of ultimately common origin: structural resemblance between plants, animals, or minerals pointing to identity of stock: relationship by marriage, opposed to consanguinity or relationship by blood: :
    • n Affinity af-fin′i-ti (B.) social relationship: the spiritual relationship between sponsors and their godchild: a mysterious attraction supposed to exist between two persons
    • n Affinity af-fin′i-ti (chem.) the peculiar attraction between the atoms of two simple substances that makes them combine to form a compound
    • ***


  • Pierre Teilhard De Chardin
    “Love is the affinity which links and draws together the elements of the world... Love, in fact, is the agent of universal synthesis.”


Webster's Revised Unabridged Dictionary
OF. afinité, F. affinité, L. affinites, fr. affinis,. See Affined
Chambers's Twentieth Century Dictionary
Fr.—L. affinitasaffinis, neighbouring—ad, at, finis, boundary.


In literature:

And it is interesting to note how partial and divided these affinities must necessarily be.
"What is Coming?" by H. G. Wells
It must needs be in something having a clear affinity with us, or we could not feel it.
"Lectures on Art" by Washington Allston
A want of affinity does not necessarily imply an existing evil in the other party.
"Atlantic Monthly, Volume 6, No. 38, December, 1860" by Various
This peculiarity is owing to the affinity between molten iron or steel and carbon.
"Scientific American Supplement, No. 601, July 9, 1887" by Various
Wawatam, a distinguished chief, had found himself drawn, by strong affinity, to the English stranger.
"Summer on the Lakes, in 1843" by S.M. Fuller
It's the silly will that brings us together, not an affinity.
"The Man From Brodney's" by George Barr McCutcheon
I cannot see that literary tastes and dissipated habits have any natural affinity.
"Fenton's Quest" by M. E. Braddon
These three languages are primitive; that is to say, are so distinct as to have no perceivable affinity.
"A Ramble of Six Thousand Miles through the United States of America" by S. A. Ferrall
He has affinities with Vaughan, Herbert, and Sir Thomas Browne, with Blake and with Wordsworth.
"Mysticism in English Literature" by Caroline F. E. Spurgeon
Their paintings show a remarkable affinity to the style of Picasso and Matisse.
"Punch, or the London Charivari, Vol. 156, June 4, 1919." by Various

In poetry:

To certain, special lines of thought
My mind intuitively tends,
And old affinities have brought
Not new, but ancient friends.
"Reincarnation" by John Lawson Stoddard
With all the dread solemnities
Associated with that word,
The severance of affinities,
Life-loves and friendships long preferred.
"Tribute To Rev. William Paul Quinn" by James Madison Bell
Fraternal Love shall quit thy coasts,
And ev'ry social joy be lost,
Nor nature, nor affinity,
Shall, whilst it lasts, be found in thee.
"A Warning To The Welsh, To Repent, Wrote At The Time A Great Plague Rag'd In London" by Rees Prichard
So, forth they came--a vast ancestral line,
Upon my vision teeming,
All shapes whose natal semblance could affine
Them to me, faintly gleaming.
"The Strong Man To His Sires" by Cale Young Rice
"For deep affinities, for drawings strong,
That by their nature each must needs exert;
For loved alliance, and for union long,
That stands before desert.
"Honours -- Part I" by Jean Ingelow
I being graft in Thee I am grafted here
Into Thy family, and kindred claim
To all in heaven, God, saints, and angels there.
I Thy relations my relations name.
Thy father's mine, Thy God my God, and I
With saints and angels draw affinity.
"Preparatory Meditations - First Series: 29" by Edward Taylor

In news:

The secret to the Manhattan's enduring popularity can be largely attributed to the natural affinity between spirits and fortified wines.
The affinity between poetry and travel is a robust one.
The only problem with Kevin's affinity for the the Big Blue is that he lives deep in the heart of IU country.
BORA, a product division of Affinity Tool Works, introduced its new magnetic combination square hand tool .
David Mamet has directed more than a dozen movies, none of which suggest he has much of an affinity for the job.
On those trips did you ever notice anything about the surroundings, other than an affinity for the colors orange and black.
The affinity is still sort of new.
A 14-year-old boy with an affinity for all things military makes for an extremely likable protagonist in former naval officer Garigliano's dark, wonderfully twisted debut.
Affinity Plus FCU CEO is Trailblazers CEO of the Year.
This time, he is showing his affinity for breakfast Mexican by showing out on a breakfast taco.
Illinois' affinity for municipal government .
No Affinity for Trees, but a Nature Crusader Nonetheless .
Triad of new brewers a testament to Coloradoans' growing craft-beer affinity.
I don't know if it's my Asian lineage that makes me genetically predisposed to having an affinity for rice, but I love rice dishes.
CANADA is probably better known for hockey, cold weather and its cheap dollar, but it seems that American lawmakers have an affinity for its BlackBerrys, the popular e-mail devices made by Research in Motion of Waterloo, Ontario.

In science:

Degenerate double affine Hecke algebra Let C[ ˙W ] denote the group algebra of ˙W and let S ( ˙h) denote the symmetric algebra of ˙h = h ⊕ Cc.
Classification of simple modules over degenerate double Affine Hecke algebras of type A
Non-metric generalizations of GR are considered and a system of postulates is formulated for metric-affine and Finsler gravitational theories.
Non-metric Generalizations of Relativistic Gravitational Theory and Observational Data Interpretation
At the end we consider a differential-geometrical problem, which is useful for subsequent applications: this concerns with perturbations of geodesics of Riemannian space induced by affine and Finsler deformations of connection.
Non-metric Generalizations of Relativistic Gravitational Theory and Observational Data Interpretation
We see that expression (A6) indeed satisfies Eq. (A5). Formula (A6) is valid for deformations due to disturbance of the metric as well as for affine and Finsler deformations of the connection.
Non-metric Generalizations of Relativistic Gravitational Theory and Observational Data Interpretation
Cartan, On manifolds with an affine connection and the theory of relativity, (English translation by A.
Hermitian structures defined by linear electromagnetic constitutive laws