DECIDUITY
Dec`i*du"i*ty, n.

Defn: Deciduousness. [R.]

DECIDUOUS De*cid"u*ous, a. Etym: [L. deciduus, fr. dec to fall off; de- + cadere to fall. See Chance.] (Biol.)

Defn: Falling off, or subject to fall or be shed, at a certain season, or a certain stage or interval of growth, as leaves (except of evergreens) in autumn, or as parts of animals, such as hair, teeth, antlers, etc.; also, shedding leaves or parts at certain seasons, stages, or intervals; as, deciduous trees; the deciduous membrane.

DECIDUOUSNESS
De*cid"u*ous*ness, n.

Defn: The quality or state of being deciduous.

DECIGRAM; DECIGRAMME Dec"i*gram, Dec"i*gramme, n. Etym: [F. décigramme; pref. déci- tenth (fr. L. decimus) + gramme.]

Defn: A weight in the metric system; one tenth of a gram, equal to 1.5432 grains avoirdupois.

DECIL; DECILE
Dec"il, Dec"ile, n. Etym: [F. décil, fr. L. decem tendecile.]
(Astrol.)

Defn: An aspect or position of two planets, when they are distant from each other a tenth part of the zodiac, or 36º.