The act of introducing or inserting anything, especially that which is spurious or foreign. [1913 Webster]
That which is introduced or inserted, especially something foreign or spurious. [1913 Webster]
"Bentley wrote a letter . . . . upon the scriptural glosses in our present copies of Hesychius, which he considered interpolations from a later hand." [1913 Webster]
The method or operation of finding from a few given terms of a series, as of numbers or observations, other intermediate terms in conformity with the law of the series. [1913 Webster]

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THESAURUS

interpolation

addition, affix, allonge, appendix, approximation, aside, cadenza, coda, codicil, commentary, differentiation, division, embedment, enclitic, entrance, envoi, epilogue, episode, equation, evolution, extempore, extrapolation, flourish, graft, grafting, hot lick, impaction, impactment, implantation, impromptu, improvisation, infix, infixion, infusion, injection, inoculation, insert, insertion, insinuation, integration, intercalation, interjection, interlineation, interlocution, introduction, intromission, inversion, involution, lick, marginalia, multiplication, notation, note, obiter dictum, parenthesis, penetration, perfusion, postscript, practice, prefix, proclitic, proportion, reduction, remark, rider, riff, scholia, side remark, subtraction, suffix, tail, tessellation, tossing-in, transformation, transplant, transplantation, vamp

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ROGET THESAURUS

interpolation

Mixture

N mixture, admixture, commixture, commixtion, commixion, intermixture, alloyage, matrimony, junction, combination, miscegenation, impregnation, infusion, diffusion suffusion, transfusion, infiltration, seasoning, sprinkling, interlarding, interpolation, adulteration, sophistication, tinge, tincture, touch, dash, smack, sprinkling, spice, seasoning, infusion, soupcon, alloy, amalgam, brass, chowchow, pewter, magma, half-and-half, melange, tertium quid, miscellany, ambigu, medley, mess, hotchpot, pasticcio, patchwork, odds and ends, all sorts, jumble, salad, sauce, mash, omnium gatherum, gallimaufry, olla-podrida, olio, salmagundi, potpourri, Noah's ark, caldron texture, mingled yarn, mosaic, half-blood, half-caste, mulatto, terceron, quarteron, quinteron, quadroon, octoroon, griffo, zambo, cafuzo, Eurasian, fustee, fustie, griffe, ladino, marabou, mestee, mestizo, quintroon, sacatra zebrule, catalo, cross, hybrid, mongrel, mixed, implex, composite, half-and-half, linsey-woolsey, chowchow, hybrid, mongrel, heterogeneous, motley, miscellaneous, promiscuous, indiscriminate, miscible, among, amongst, amid, amidst, with, in the midst of, in the crowd.

Numeration

N numeration, numbering, pagination, tale, recension, enumeration, summation, reckoning, computation, supputation, calculation, calculus, algorithm, algorism, rhabdology, dactylonomy, measurement, statistics, arithmetic, analysis, algebra, geometry, analytical geometry, fluxions, differential calculus, integral calculus, infinitesimal calculus, calculus of differences, dead reckoning, muster, poll, census, capitation, roll call, recapitulation, account, notation, addition, subtraction, multiplication, division, rule of three, practice, equations, extraction of roots, reduction, involution, evolution, estimation, approximation, interpolation, differentiation, integration, abacus, logometer, slide rule, slipstick, tallies, Napier's bones, calculating machine, difference engine, suan- pan, adding machine, cash register, electronic calculator, calculator, computer, arithmetician, calculator, abacist, algebraist, mathematician, statistician, geometer, programmer, accountant, auditor, numeral, numerical, arithmetical, analytic, algebraic, statistical, numerable, computable, calculable, commensurable, commensurate, incommensurable, incommensurate, innumerable, unfathomable, infinite, quantitatively, arithmetically, measurably, in numbers.

Interposition

N interposition, interjacence, intercurrence, intervenience, interlocation, interdigitation, interjection, interpolation, interlineation, interspersion, intercalation, interpenetration, permeation, infiltration, intervention, interference, intrusion, obtrusion, insinuation, insertion, dovetailing, embolism, intermediary, intermedium, go between, bodkin, intruder, interloper, parenthesis, episode, flyleaf, partition, septum, diaphragm, midriff, dissepiment, party wall, panel, room divider, halfway house, interjacent, intercurrent, intervenient, intervening, intermediate, intermediary, intercalary, interstitial, embolismal, parenthetical, episodic, mediterranean, intrusive, embosomed, merged, between, betwixt, twixt, among, amongst, amid, amidst, mid, midst, in the thick of, betwixt and between, sandwich-wise, parenthetically, obiter dictum.

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