• WordNet 3.6
    • n mutuality a reciprocal relation between interdependent entities (objects or individuals or groups)
    • n mutuality a reciprocality of sentiments "the mutuality of their affection was obvious"
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Additional illustrations & photos:


Webster's Revised Unabridged Dictionary
    • Mutuality (Law) Reciprocity of consideration.
    • Mutuality The quality of correlation; reciprocation; interchange; interaction; interdependence.
    • ***
Century Dictionary and Cyclopedia
    • n mutuality The state or quality of being mutual; reciprocity; interchange. Thus, a contract that has no consideration is said to be void for want of mutuality.
    • n mutuality Interchange of acts or expressions of affection or kindness; familiarity.
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  • Prince Pyotr Kropotkin
    Prince Pyotr Kropotkin
    “Mutual aid is as much a law of animal life as mutual struggle.”
  • Thomas Hobbes
    “The praise of ancient authors proceeds not from the reverence of the dead, but from the competition and mutual envy of the living.”
  • Frankfort Moore
    Frankfort Moore
    “There is no stronger bond of friendship than a mutual enemy.”
  • Voltaire
    “We are all full of weakness and errors; let us mutually pardon each other our follies it is the first law of nature.”
  • John Ciardi
    John Ciardi
    “Love is the word used to label the sexual excitement of the young, the habituation of the middle-aged, and the mutual dependence of the old.”
  • Louis K. Anspacher
    Louis K. Anspacher
    “Marriage is that relation between man and woman in which the independence is equal, the dependence mutual, and the obligation reciprocal.”


Webster's Revised Unabridged Dictionary
Cf. F. mutualité,


In literature:

These mutual relations, helps, and dependencies, are manifest in all creation.
"Lectures on Language" by William S. Balch
This feeling ought to be mutual between host and guest.
"Our Deportment" by John H. Young
They fell into each other's arms, declaring their mutual love.
"Repertory Of The Comedie Humaine, Complete, A -- Z" by Anatole Cerfberr and Jules François Christophe
Conquest of one group by another was only one way of mutual cultural penetration.
"A history of China., [3d ed. rev. and enl.]" by Wolfram Eberhard
I love mutual independence combined with perfect sympathy.
"Bella Donna" by Robert Hichens
Others of our mutual friends have done that.
"Autobiography of Andrew Carnegie" by Andrew Carnegie
It is not so easy as we may suppose to break the ties by which God has bound us all together in mutual dependence.
"The Heavenly Father" by Ernest Naville
Let the world deem their union was the work of mutual passion only.
"Tales from the Hindu Dramatists" by R. N. Dutta
We were mutually deceived.
"Arthur Mervyn" by Charles Brockden Brown
The entire household was one of mutual service, and gentle, trusting affection.
"Little Journeys to the Homes of the Great - Volume 14" by Elbert Hubbard

In poetry:

Here the anthem doth commence:
Love and constancy is dead;
Phoenix and the Turtle fled
In a mutual flame from hence.
"The Phoenix And The Turtle" by William Shakespeare
And mutual fear brings peace,
Till the selfish loves increase:
Then Cruelty knits a snare,
And spreads his baits with care.
"The Human Abstract" by William Blake
When with a love none can express,
That mutually happy pair,
Melander and Celinda fair,
The season with their loves did bless.
"An Ode Upon a Question Moved, Whether Love Should Continue Forever" by Lord Edward Herbert of Cherbury
Twin stars, aloft in ether clear,
Around each other roll alway,
Within one common atmosphere
Of their own mutual light and day.
"A Hope" by Charles Kingsley
For ever, Fortune, wilt thou prove
An unrelenting foe to love,
And when we meet a mutual heart
Come in between, and bid us part;
"To Fortune" by James Thomson
Thou, the first friend my heart had chosen—
Whose wish, whose hope was mine,
Farewell!—the once warm vows are frozen
That lured my fate to thine:
Each link of that bright chain is gone
That bound our mutual hearts in one.
"To a False Friend" by Louisa Stuart Costello

In news:

Issaquah School Board and Newcastle City Council members met to discuss issues of mutual interest May 14 in Newcastle.
It started when Koo was introduced to the owners of high profile boutique Traffic in Los Angeles' Beverly Center through a mutual friend.
Contract, contractor statute of repose, general statute of limitations , MCL 600.5807(8), MCL 600.5839(1), Michigan Millers Mutual Insurance Co.
I've said it before and I'll say it again: It's a dismal year for mutual funds.
Amelia and Florent Marneau opened Marché Moderne in early 2007 as a culmination of their mutual cooking careers in Orange County.
Kim Kardashian and Kanye West have a mutual love for fashion -- and each other.
The Mutual Fund Merry-Go-Round .
The years when rock clubs and discothèques were mutually exclusive are behind us.
New Mexico State University regents announced a mutual separation between the university and President Barbara Couture during their public meeting Monday on campus.
Luckily, the two aren't mutually exclusive.
Morningstar , Inc, a leading provider of independent investment research, today reported estimated US mutual fund asset flows through June 2012.
This photo from the 1920s shows some of the founding members of Quincy's Torre Dei Passeri Mutual Benefit Society.
Bel Air town commissioners will consider signing a mutual aid agreement that will allow the town to receive reimbursement if it gives money or resources to another jurisdiction during a state of emergency.
Notre Dame, ACC partnership mutually beneficial, rooted in 'shared values'.
Job creation, destruction not mutually exclusive.

In science:

If E is strongly connected with period d then C ∗ (E )γ is the direct sum of d mutually isomorphic AF algebras.
Some intrinsic properties of simple graph $C^*$-algebras
Then E ×c Γ consists of |Γ : Γv (c)| mutual ly isomorphic connected components, where Γv (c) is the local voltage group of c based at v ∈ E 0 .
Some intrinsic properties of simple graph $C^*$-algebras
Since the natural action λ of Γ on E ×c Γ c (v ) = {(v , g ) : g ∈ Γ} for all v ∈ E 0 and E is connected it follows that is transitive on p−1 the connected components of E ×c Γ are mutually isomorphic.
Some intrinsic properties of simple graph $C^*$-algebras
Then C ∗(E )γ is a direct sum of d mutual ly isomorphic AF algebras.
Some intrinsic properties of simple graph $C^*$-algebras
By Corollary 5.6 E ×c Z consists of d mutually isomorphic components.
Some intrinsic properties of simple graph $C^*$-algebras