Part 371

Dis*junct" (ds*jkt"), a. [L. disjunctus, p. p. of disjungere to disjoin. See Disjoin, and cf. Disjoint.] 1. Disjoined; separated. [R.]

2. (Zoöl.) Having the head, thorax, and abdomen separated by a deep constriction.

Disjunct tetrachords (Mus.), tetrachords so disposed to each other that the gravest note of the upper is one note higher than the acutest note of the other.

Dis*junc"tion (?), n. [L. disjunctio.] 1. The act of disjoining; disunion; separation; a parting; as, the disjunction of soul and body.

2. A disjunctive proposition. Coleridge.

Dis*junc"tive (?), a. [L. disjunctivus: cf. F. disjonctif.] 1. Tending to disjoin; separating; disjoining.

2. (Mus.) Pertaining to disjunct tetrachords. "Disjunctive notes." Moore (Encyc. of Music).

Disjunctive conjunction (Gram.), one connecting grammatically two words or clauses, expressing at the same time an opposition or separation inherent in the notions or thoughts; as, either, or, neither, nor, but, although, except, lest, etc. -- Disjunctive proposition, one in which the parts are connected by disjunctive conjunctions; as it is either day or night. -- Disjunctive syllogism (Logic), one in which the major proposition is disjunctive; as, the earth moves in a circle or an ellipse; but in does not move in a circle, therefore it moves in an ellipse.

Dis*junc"tive, n. (a) (Gram.) A disjunctive conjunction. (b) (Logic) A disjunctive proposition.

Dis*junc"tive*ly, adv. In a disjunctive manner; separately. Dr. H. More.

Dis*junc"ture (?; 135), n. The act of disjoining, or state of being disjoined; separation. Fuller.

Disk (dsk), n. [L. discus, Gr. di`skos. See Dish.] [Written also disc.] 1. A discus; a quoit.

Some whirl the disk, and some the javelin dart.

Pope.

2. A flat, circular plate; as, a disk of metal or paper.

3. (Astron.) The circular figure of a celestial body, as seen projected of the heavens.

4. (Biol.) A circular structure either in plants or animals; as, a blood disk; germinal disk, etc.

5. (Bot.) (a) The whole surface of a leaf. (b) The central part of a radiate compound flower, as in sunflower. (c) A part of the receptacle enlarged or expanded under, or around, or even on top of, the pistil.

6. (Zoöl.) (a) The anterior surface or oral area of cœlenterate animals, as of sea anemones. (b) The lower side of the body of some invertebrates, especially when used for locomotion, when it is often called a creeping disk. (c) In owls, the space around the eyes.

Disk engine, a form of rotary steam engine. -- Disk shell (Zoöl.), any species of Discina.

Dis*kind"ness (?), n. Unkindness; disservice. [R.] A. Tucker.

Disk"less (?), a. Having no disk; appearing as a point and not expanded into a disk, as the image of a faint star in a telescope.

Dis*lade" (?), v. t. To unlade. [Obs.] Heywood.

Dis*leal" (?), a. [See Disloyal, Leal.] Disloyal; perfidious. [Obs.] "Disleal knight." Spenser.

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Dis*leave" (?), v. t. To deprive of leaves. [R.]

The cankerworms that annually that disleaved the elms.

Lowell.