Part 935

Sub*trac"tion (?), n. [L. subtractio a drawing back. See Subtract, and cf. Substraction.] 1. The act or operation of subtracting or taking away a part.

2. (Math.) The taking of a lesser number or quantity from a greater of the same kind or denomination; an operation for finding the difference between two numbers or quantities.

3. (Law) The withdrawing or withholding from a person of some right to which he is entitled by law.

Thus the subtraction of conjugal rights is when either the husband or wife withdraws from the other and lives separate without sufficient reason. The subtraction of a legacy is the withholding or detailing of it from the legatee by the executor. In like manner, the withholding of any service, rent, duty, or custom, is a subtraction, for which the law gives a remedy. Blackstone.

Sub*trac"tive (?), a. 1. Tending, or having power, to subtract.

2. (Math.) Having the negative sign, or sign minus.

Sub"tra*hend` (?), n. [L. subtrahendus that is to be subtracted, p.fut.pess. of subtrahere. See Subtract.] (Math.) The sum or number to be subtracted, or taken from another.

Sub`trans*lu"cent (?), a. Not perfectly translucent.

Sub`trans*pa"rent (?), a. Not perfectly transparent.

Sub*treas"ur*er (?), n. The public officer who has charge of a subtreasury. [U. S.]

Sub*treas"ur*y (?), n.; pl. Subtreasuries (&?;). A subordinate treasury, or place of deposit; as, the United States subtreasury at New York. [U. S.]

Sub`tri*an"gu*lar (?), a. Nearly, but not perfectly, triangular. Darwin.

Sub"tribe` (?), n. (Bot. & Zoöl.) A division of a tribe; a group of genera of a little lower rank than a tribe.

Sub`tri*he"dral (?), a. Approaching the form of a three-sided pyramid; as, the subtrihedral crown of a tooth. Owen.

Sub*tri"ple (?), a. (Math.) Containing a third, or one part to three. Bp. Wilkins.

Sub*trip"li*cate (?), a. (Math.) Expressed by the cube root; -- said especially of ratios.

Subtriplicate ratio, the ratio of the cube root; thus, the subtriplicate ratio of a to b is a to b, or a/b.

Sub*trop"ic*al (?), a. Nearly tropical.

Sub*trude" (?), v. t. [imp. & p. p. Subtruded; p. pr. & vb. n. Subtruding.] [Pref. sub- + L. trudere to thrust.] To place under; to insert. [R.]

Sub`tur*ric"u*late (?), a. (Zoöl.) Somewhat turriculate.

Sub*tu"tor (?), n. An under tutor.

Sub*typ"ic*al (?), a. (Zoöl.) Deviating somewhat from the type of a species, genus, or other group; slightly aberrant.

{ Su"bu*late (?), Su"bu*la`ted (?), } a. [NL. subulatus, fr. L. subula an awl.] Very narrow, and tapering gradually to a fine point from a broadish base; awl-shaped; linear.

||Su`bu*li*cor"nes (?), n. pl. [NL., from L. subula an awl + cornu ||horn.] (Zoöl.) A division of insects having slender or subulate ||antennæ. The dragon flies and May flies are examples.

Su"bu*li*form (?), a. Subulate.

Su"bu*li*palp` (?), n. [L. subula an awl + E. palp.] (Zoöl.) One of a group of carabid beetles having slender palpi.

Sub`um*bo"nal (?), a. (Zoöl.) Beneath or forward of the umbos of a bivalve shell.

Sub`um*brel"la (?), n. (Zoöl.) The integument of the under surface of the bell, or disk-shaped body, of a jellyfish.