DIMORPHIC, _a._ Of two forms.
DIPLO´Ë, _n._ Light spongy network of bone between inner and outer
surface of the skull.
DISC or DISK, _n._ Set of radiating feathers of peculiar shape or
texture around the eye of owls.
DISSEPIMEN´TUM NAR´IUM, _n._ Same as _septum narium_, which see.
DIS´TAD, _a._ Toward an extremity.
DIS´TAL, _a._ Remote; situate at or near an extremity; opposed to
_proximal_.
DIS´TICHOUS, _a._ Two-rowed; spread apart on either side of a middle
line, as the hairs of a squirrel’s tail, or the tail-feathers of the
_Archæopteryx_.
DITOK´OUS, _a._ Producing but two eggs, as the pigeon and humming-bird.
DIUR´NAL, _a._ Pertaining to the daytime.
DIVAR´ICATE, _a._ Branching off; spreading apart; curving away.
DIVERTIC´ULUM, _n._ An offshoot of the small intestine.
DOR´SAD, _a._ Toward the back. Opposite of _ventrad_.
DOR´SAL, _a._ Pertaining to the back.