#93.  Triplication. —­ N. triplication, triplicity[obs3];
trebleness[obs3], trine. 
     V. treble, triple; triplicate, cube. 
     Adj. treble, triple; tern, ternary; triplicate, threefold,
trilogistic[obs3]; third; trinal[obs3], trine. 
     Adv. three times, three fold; thrice, in the third place, thirdly;
trebly &c. adj.

     #94. [Division into three parts.] Trisection. —­ N. trisection,
tripartition[obs3], trichotomy; third, third part. 
     V. trisect, divide into three parts. 
     Adj. trifid; trisected &c. v.; tripartite, trichotomous[obs3],
trisulcate[obs3]. 
     Triadelphous[obs3], triangular, tricuspid, tricapsular[obs3],
tridental[obs3], tridentate, tridentiferous[obs3], trifoliate, trifurcate, trigonal[obs3], trigrammic[obs3], trigrammatic[obs3], tripetalous[obs3], tripodal, tripodic[obs3], triquetral[obs3], triquetrous[obs3].

<—­ note that square in the mathematical sense is more related to two
than to four.  Subdivide? —­>
     #95.  Four. —­ N. quaternity[obs3], four, tetrad, quartet, quaternion,
square, quarter.
     [planar form with four sides] tetract[obs3], tetragon, quadrangle,
rectangle.
     [three dimensional object with four surfaces] tetrahedron.
     quadrature, quadrifoil, quadriform, quadruplet; quatrefoil.
     [object or animal with four legs] tetrapod.
     [geographical area with four sides] quadrangle, quad[coll.].
     [electromagnetic object] quadrupole.
     [four fundamental studies] quadrivium. 
     V. reduce to a square, square. 
     Adj. four; quaternary, quaternal[obs3]; quadratic; quartile;
tetract[obs3], tetractic[obs3], tetractinal[obs3]; tetrad, tetragonal;
square, quadrate.

     #96.  Quadruplication. —­ N. quadruplication. 
     V. multiply by four, quadruplicate, biquadrate[obs3]. 
     Adj. fourfold, four times; quadrable[obs3], quadrumanous[obs3],
quadruple, quadruplicate, quadrible[obs3]; fourth.
     quadrifoliate[obs3], quadrifoliolate[obs3], quadrigeminal[obs3],
quadrigeminate[obs3], quadriplanar[obs3], quadriserial[obs3]. 
     Adv. four times; in the fourth place, fourthly.

     #97. [Division into four parts.] Quadrisection. —­ N. quadrisection,
quadripartition[obs3]; quartering &c. v; fourth; quart; quarter, quartern[obs3]; farthing (i.e. fourthing)[obs3]; quadrant. 
     V. quarter, divide into four parts. 
     Adj. quartered &c. v.; quadrifid[obs3], quadripartite.
     rectangular.

     #98.  Five, &c. —­ N. five, cinque[Fr], quint, quincux[obs3]; six,
half-a-dozen, half dozen; seven; eight; nine, three times three; dicker; ten, decade; eleven; twelve, dozen; thirteen; long dozen, baker’s dozen; quintuplet; twenty, score; twenty-four, four and twenty, two dozen; twenty-five, five and twenty, quarter of a hundred; forty, two score; fifty, half a hundred; sixty, three score; seventy, three score and ten; eighty,