• WordNet 3.6
    • v reciprocate alternate the direction of motion of "the engine reciprocates the propeller"
    • v reciprocate act, feel, or give mutually or in return "We always invite the neighbors and they never reciprocate!"
    • ***
Webster's Revised Unabridged Dictionary
    • v. t Reciprocate To give and return mutually; to make return for; to give in return; to interchange; to alternate; as, to reciprocate favors.
    • v. i Reciprocate To move forward and backward alternately; to recur in vicissitude; to act interchangeably; to alternate. "One brawny smith the puffing bellows plies,
      And draws and blows reciprocating air."
    • ***
Century Dictionary and Cyclopedia
    • reciprocate To cause to move back and forth; give an alternating motion to.
    • reciprocate To give and return mutually; yield or perform each to each; interchange: as, to reciprocate favors.
    • reciprocate To give or do in response; yield a return of; requite correspondingly.
    • reciprocate To move backward and forward; have an alternating movement; act interchangeably; alternate.
    • reciprocate To act in return or response; do something equivalent or accordant: as, I did him many favors, but he did not reciprocate.
    • reciprocate In mathematics, to take the reciprocal of.
    • ***
Chambers's Twentieth Century Dictionary
    • v.t Reciprocate to give and receive mutually: to requite: to interchange: to alternate
    • ***


  • Samuel Johnson
    “Life cannot subsist in society but by reciprocal concessions.”
  • Washington Irving
    “Love is never lost. If not reciprocated, it will flow back and soften and purify the heart.”
  • 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
L. reciprocatus, p. p. of reciprocare,. See Reciprocal
Chambers's Twentieth Century Dictionary
L. reciprocus.


In literature:

Perhaps she was a little annoyed that her elaborate introduction of herself had produced no reciprocal disclosure by her companion.
"A First Family of Tasajara" by Bret Harte
I don't know how you were but I was keen on Reciprocity.
"The Major" by Ralph Connor
And finally, give Fanny a double reciprocation of all the love she sent me.
"The Papers And Writings Of Abraham Lincoln, Complete" by Abraham Lincoln
Lottie and Boyne burst the chains of the unnatural kindness which bound them, and resumed their old relations of reciprocal censure.
"The Kentons" by William Dean Howells
They stared at each other in reciprocal amazement and mystification.
"Dr. Breen's Practice" by William Dean Howells
City and country are still so widely apart in every civilization that one can safely count upon a reciprocal strangeness in many every-day things.
"Literature and Life" by William Dean Howells
No one can esteem your father more than I do, but I doubt if this feeling is reciprocal.
"Barchester Towers" by Anthony Trollope
The politeness is reciprocal.
"Bramble-bees and Others" by J. Henri Fabre
And this attraction was reciprocal.
"The Strolling Saint" by Raphael Sabatini
You have never seen the woman whom you adore, and who perhaps reciprocates your passion, forced to marry another.
"Old Fritz and the New Era" by Louise Muhlbach

In poetry:

Urit spes animi credula mutui.—Hor.
Fond hope of a reciprocal desire
Inflames the breast.
"Ode, written 1739" by William Shenstone
(Therein a stable boy, it's stated,
Devoutly loved a noble dame,
Who ardently reciprocated
His rather injudicious flame.)
"Little Oliver" by William Schwenck Gilbert
"I doubt it not," said John, "and I
Reciprocate the feeling,
And here, with one despairing cry,
I kneel, and love you, kneeling."
"John And Jane" by Thomas Frederick Young
Reciprocal visits were often,
He slept with me, I slept with him,
Talked till near dawn of daylight,
With fluent and scholarly Tim.
"Tim" by Jared Barhite
Who seek a friend should come dispos’d
To exhibit, in full bloom disclos’d,
The graces and the beauties
That form the character he seeks,
For ‘tis a union that bespeaks
Reciprocated duties.
"Friendship" by William Cowper
The worthy priest, he up and drew his cowl upon his crown,
And started off in haste to tell the news to ROBBER BROWN -
To tell him how his daughter, who was now for marriage fit,
Had winked upon a sorter, who reciprocated it.
"Gentle Alice Brown" by William Schwenck Gilbert

In news:

Tax Reciprocity Deal Unlikely by Oct 1st Deadline.
State officials hit a major road block in the efforts to reinstate reciprocity between Minnesota and Wisconsin.
French Trade Min Calls for European Trade Reciprocity .
It's time to set a price for reciprocity .
Wisconsin and Minnesota are far apart on how much the Badger State should pay for tax reciprocity .
Which agencies are poorest in contractor clearance reciprocity .
And Melissa Leo Take On Sexual Reciprocity on Louie.
Iran looking for respect and reciprocity .
Schneiderman urges Senate against reciprocity .
Louisiana State Police and the Ohio attorney general have signed an agreement allowing reciprocity between the states for residents with valid concealed weapons permits.
Minnesota and Wisconsin students who live in one state and want to attend school in the other can again pay the resident rates at colleges in either state after a new reciprocity agreement was reached.
The state of Wisconsin has settled an old tax reciprocity debt that was owed to Minnesota.
Licensing Reciprocity Standard for Alarm Monitor.
No chance of reciprocity .
The University President says changing the Minnesota-Wisconsin reciprocity agreement would raise another $5 million in annual revenue for the university.

In science:

Here, the coefficients cij and dij are identical because of spatial reciprocity : C ≡ D.
Singular value distribution of the propagation matrix in random scattering media
By Frobenius reciprocity, it follows that there exists a surjective Haff C ℓ (d)-homomorphism f : M(λ, µ) → H λ/µ given by f (1λ−µ ) = vT .
Degenerate Affine Hecke-Clifford Algebras and Type $Q$ Lie Superalgebras
Time-reversal symmetry (reciprocity) dictates that r is symmetric.
Applications of random matrix theory to condensed matter and optical physics
Furthermore, as emphasized in , magnification sum relations are in fact geometric invariants, because they are the reciprocals of Gaussian curvatures at critical points.
A Universal Magnification Theorem II. Generic Caustics up to Codimension Five
Due to the 0dimensionality of the system only the Γ point is necessary to sample the reciprocal space.
Ab initio investigation of the groundstate, electronic, and optical properties of polyyne and cumulene prototypes