EARED, _a._ Having lengthened or highly colored auricular or other
feathers on the side of the head. _Eared_ grebe; long-_eared_ owl.
EC´DYSIS, _n._ Moult; the shedding and renewal of plumage.
ECON´OMY (also written _œconomy_), _n._ Physical or physiological
disposition. (Literally, regulation of a household.)
ECTO- (_in composition_). Outer.
ECTOZO´ÖN, _n._ External parasite, as a louse; same as _epizoön_.
Opposed to _entozoön_.
EDEN´TATE, EDEN´TULOUS, _a._ Toothless, as nearly all birds are.
EDGE OF WING. (95.) See CAMPTERIUM.
EF´FERENT, _a._ Conveying outward or away; opposed to _afferent_.
EL´EMENT, _n._ A simple ultimate constituent part of a compound organ.
The centrum is an _element_ of a vertebra.
EL´EVATED, _a._ Said of the hind toe when inserted above the level of
the others.
ELON´GATE, _a._ Lengthened beyond usual ratio.
EMAR´GINATE, _a._ Notched at the end; slightly forked, especially in
case of a tail so shaped; also notched, or abruptly narrowed along the
edge, in its continuity, as the border of many a wing-quill.
EMBONPOINT, _n._ State of perfect health, as indicated by condition of
fatness not amounting to corpulence or obesity.
EM´BRYO, _n._ Fecundated germ or rudiment of an animal; said of a bird
until hatched, and therefore corresponding to _fœtus_ in mammalogy.
EMBRYOL´OGY, _n._ Science or study of the development of animals before
birth or hatching.
EMBRYON´IC, _a._ Pertaining to an embryo; being an embryo; not yet
hatched.
ENAM´EL, _n._ The hard white substance covering the teeth.
ENARTHRO´SIS, _n._ Ball-and-socket joint.
ENCEPH´ALON, _n._ Contents of the cranium, especially the brain.
ENDOCAR´DIUM, _n._ Lining membrane of the heart.
ENDOG´ENOUS, _a._ Of internal growth or formation; interstitially
deposited. Compare _autogenous_. Opposed to _exogenous_.
ENDOSKEL´ETON, _n._ The skeleton proper, or skeleton as commonly
understood; the inner bony framework of the body. (Used in distinction
from _exoskeleton_ or _dermoskeleton_, such as some animals possess.)
ENTER´IC, _a._ Belonging or relating to the intestines; intestinal.
ENTO- (_in composition_). Inner.
EPENCEPH´ALON, _n._ Hindmost segment of the brain.
EPI- (_in composition_). On; upon; over. Opposed to _hypo-_.
EPIDER´MIS, _n._ Cuticle or scarf-skin.
EPIDID´YMIS, _n._ An associate organ of the testis, in birds apparently
a remnant of the primordial kidney.
EPIGAS´TRIUM, _n._ Pit of stomach; upper belly, next to breast. (A
region not well distinguished in birds. The term is scarcely used.)
(64.)
EPIGLOT´TIS, _n._ Gristly flap on top of windpipe, rudimentary or
wanting in birds.
EPIGNATH´OUS, _a._ Hook-billed.
EPIOT´IC, _a._ for _n._ A certain element of the auditory capsule.
EPIPH´YSIS, _n._ Gristly cap on the end of a bone, afterward becoming
bony and united.
EPIPLEU´RA, _n._ An obliquely backward bony process of a vertebral rib.
EPITHE´LIUM, _n._ Superficial layer of mucous membrane. Sometimes also
the thick tough membrane lining the gizzard.
EPITHE´MA, _n._ Horny excrescence upon the bill.
EPIZO´ÖN, _n._ An external parasite.
EPIZOÖT´IC, _a._ Parasitic among animals.
EREC´TILE, _a._ Susceptible of being raised, as a crest; or capable of
swelling and stiffening, as a penis.
ER´YTHRISM, _n._ A particular state of plumage characterized by excess
of red pigment; it is well shown in _Scops asio_ and other owls.
(Compare _albinism_ and _melanism_.)
ETH´MOID, _n._ One of the cranial bones, in the nasal region.
ETYP´ICAL, _a._ Of exceptional character. Tending away from a particular
type. Opposed to _attypical_.
EUSTA´CHIAN (_tube_), _a._ for _n._ The air-tube from the fauces to the
inner ear.
EVEN (_tail_), _a._ Having all the feathers of equal length. Also called
_cauda æqualis_ or _integra_.
EX- (_in composition_). Out; out of; away from.
EXCRES´CENCE, _n._ Outgrowth, fleshy or cutaneous.
EXCRE´TA, _n. pl._ Excrement, or other animal refuse.
EX´CRETORY or EX´CRETIVE, _a._ Having power or quality of excreting.
_Excreting_ differs from secreting, in that the substance resulting is
to be eliminated from the economy, not used; e.g. saliva is _secreted_;
urea is _excreted_.
EXOCCIP´ITAL, _a._ or _n._ One of the lateral elements of the occipital
bone.
EXOG´ENOUS, _a._ Produced by outgrowth.
EXOSTO´SIS, _n._ Any morbid bony outgrowth or enlargement.
EXTEN´SOR, _n._ Generic name of muscles that extend or straighten a limb
or any of its segments.