element, aspect, facet, ingredient, factor, determinant, part, integral, determiner, cog, linchpin, contributor, tenet, tool, enabler, cornerstone, keystone, lynchpin, underpinning, differentiator, module, equation, prerequisite, indicator, portion, discriminator, sacrificial anode, allotrope, rotor shaft, weldment, parameter, stumbling block, criterion, impediment, drawback, varistor, piece, metric, pillar, inferior colliculus, precursor, supplier, plank, participant, indictor, subsystem, byproduct, core, metalorganic, puzzle, flow diagram, reinforcer, modification, centerpiece, covalent bond, turbogenerator, catalyst, subassembly, enhancement, stochasticity, disabler, requirement, layer, caveat, inputs, intrinsic, prognostics, absorption coefficient, ferrocene, tenent, linkage, obstacle, corollary, milestone, macronutrient, item, glucosides, toolkit, segment, hurdle, dimension, predictor, increaser, functions, variables, sphingomyelin, key, modifier, focal point, photomultipliers, mitigant, contribution, elastic modulus, enhancer, bypass capacitor, precondition, product, subset, hapten, reinforcement, satisfier, conduit, components, constituent, characteristic, elements, attribute, clement, link, trigger, bottleneck, constraint, feature, multicomponent, dimensional, scalar, equilibrium, homogeneous, simpler, multiphase, optimised, timedependent, nonhomogeneous, object, static, template, twodimensional, viscoelastic, viscoplastic, coefficient, generic

accessory, addition, appurtenance, audio, computer hardware, crystal, detail, hardware, improver, ingredient, item, landside, language unit, linguistic unit, member, module, particular, pel, picture element, pixel, point, remainder, residual, residue, residuum, rest, spare, spare part, spark gap, subpart, substance, supplement, unit, video

., accessory, acoustic impedance, acoustic reactance, acoustic resistance, add-on, addition, adenosine, aerodynamic lift, agglutination, air national guard, analysis, ang, appurtenance, army national guard, arng, ascolichen, atom, atomic number 20, austenitic manganese steel, auto part, basidiolichen, benzylpenicillin, bulbourethral gland, ca, calcium, capacitance unit, carbamide, carbohydrate, cardinal, car part, central, chitin, clathrate, complete, comprise, constituent, contain, copper-base alloy, cowper's gland, crystal, cytidine, deoxyadenosine, deoxycytidine, deoxyguanosine, deoxythymidine, disintegration, dissolution, element, faceplate, fixings, fraction, fundamental, glycoprotein, guanosine, hardware error, harmonic, heating element, heat of formation, housing, humus, improver, incorporate, ingredient, inositol, integrated circuit, key, landside, lexicographer, lexicologist, lexicology, lift, lipid, lipide, lipoid, lipoprotein, manganese steel, mesh, mesh topology, microcircuit, module, order stereospondyli, panel, pel, penicillin g, percept, perception, perceptual experience, phonologic, phonological, picture element, pixel, primal, primary solid solution, quench, redundancy, retrofit, rhyming slang, ribose, saccharide, solid solution, solute, spare, spare part, spark gap, spectrum line, statistical mechanics, stereospondyli, stuff, sublingual gland, sublingual salivary gland, sugar, supplement, tape deck, thomas young, threonine, thymidine, tyrocidin, tyrocidine, unary, undecylenic acid, urea, whole, young

meronymy, part to whole relation

division, part, portion, relation, section

component part, constituent, element, factor, fractional, ingredient, part, portion