subject; the opening part of an oration. "The exordium of repentance." Jer. Taylor. "Long prefaces and
exordiums. " Addison.
Exorhiza
(||Ex`o*rhi"za) n.; pl. Exorhizæ (- ze). [NL. fr. Gr. 'e`xw outside + 'ri`za root.] (Bot.) A plant
Whose radicle is not inclosed or sheathed by the cotyledons or plumule. Gray.
Exorhizal
(Ex`o*rhi"zal Ex`o*rhi`zous) a. (Bot.) Having a radicle which is not inclosed by the cotyledons
or plumule; of or relating to an exorhiza.
Exornation
(Ex`or*na"tion) n. [L. exornatio, fr. exornare. See Ornate.] Ornament; decoration; embellishment.
[Obs.]
Hyperbolical exornations . . . many much affect.
Burton. Exortive
(Ex*or`tive) a. [L. exortivus, fr. exortus a coming forth, rising; ex out + orivi to rise, come
forth.] Rising; relating to the east. [R.]
Exosculate
(Ex*os"cu*late) v. t. [L. exosculatus, p. p. of exosculari to kiss. See Osculate.] To kiss; especially,
to kiss repeatedly or fondly. [Obs.]
Exoskeletal
(Ex`o*skel"e*tal) a. (Anat.) Pertaining to the exoskeleton; as exoskeletal muscles.
Exoskeleton
(Ex`o*skel"e*ton) n. [Exo- + skeleton] (Anat.) The hardened parts of the external integument
of an animal, including hair, feathers, nails, horns, scales, etc.,as well as the armor of armadillos and
many reptiles, and the shells or hardened integument of numerous invertebrates; external skeleton; dermoskeleton.
Exosmose
(Ex"os*mose`) n. [Exo+osmose: cf. F. ezosmose.] (Physics) The passage of gases, vapors,
or liquids through membranes or porous media from within outward, in the phenomena of osmose; —
opposed to endosmose. See Osmose.
Exosmosis
(||Ex`os*mo"sis) n. [NL. See Exo- , and Osmose.] (Physics) See Exosmose.
Exosmotic
(Ex`os*mot`ic) a. Pertaining to exosmose.
Exospore
(Ex`o*spore) n. [Exo + spore.] (Biol.) The extreme outer wall of a spore; the epispore.
Exossate
(Ex*os"sate) v. t. [L. exossatus, p. p. of exossare to bone , fr. exos without bones; ex out
+ os, ossis, bone.] To deprive of bones; to take out the bones of; to bone. [Obs.] Bailey.
Exossation
(Ex`os*sa"tion) n. A depriving of bone or of fruit stones. [Obs.] Bacon.
Exosseous
(Ex*os"se*ous) a. [Ex + osseous.] Boneless. "Exosseous animals. " Sir T. Browne.
Exostome
(Ex"o*stome) n. [Exo- + Gr. mouth: cf. F. exostome.] (Bot.) The small aperture or foremen
in the outer coat of the ovule of a plant.
Exostosis
(||Ex`os*to"sis) n. [NL., fr. Gr. out + bone: cf. F. exostose.]
1. (Med.) Any protuberance of a bone which is not natural; an excrescence or morbid enlargement of a
bone. Coxe.
2. (Bot.) A knot formed upon or in the wood of trees by disease.
