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The Collaborative International Dictionary of English v.0.48 (gcide)

pachyderm \pach"y*derm\ (p[a^]k"[i^]*d[~e]rm), n. [Cf. F.
pachyderme.] (Zool.)
Any of various nonruminant hoofed mammals having very thick
skin, including the {elephant}, {rhinoceros}, and
{hippopotamus}, one of the Pachydermata.
[WordNet 1.5 1913 Webster]


Rhinoceros \Rhi*noc"e*ros\ (r[-i]*n[o^]s"[-e]*r[o^]s), n. [L.,
fr. Gr. "rinoke`rws, "rinoke`rwtos; "ri`s, "rino`s, the nose
ke`ras a horn: cf. F. rhinoc['e]ros. See {Horn}.] (Zool.)
Any pachyderm belonging to the genera {Rhinoceros},
{Atelodus}, and several allied genera of the family
{Rhinocerotidae}, of which several living, and many extinct,
species are known. They are large and powerful, and usually
have either one or two stout conical median horns on the
snout.
[1913 Webster]

Note: The Indian, or white, and the Javan rhinoceroses
({Rhinoceros Indicus} and {Rhinoceros Sondaicus}) have
incisor and canine teeth, but only one horn, and the
very thick skin forms shieldlike folds. The two or
three African species belong to {Atelodus}, and have
two horns, but lack the dermal folds, and the incisor
and canine teeth. The two Malay, or East Indian,
two-horned species belong to {Ceratohinus}, in which
incisor and canine teeth are present. See {Borele}, and
{Keitloa}.
[1913 Webster]

{Rhinoceros auk} (Zool.), an auk of the North Pacific
({Cerorhina monocrata}) which has a deciduous horn on top
of the bill.

{Rhinoceros beetle} (Zool.), a very large beetle of the genus
{Dynastes}, having a horn on the head.

{Rhinoceros bird}. (Zool.)
(a) A large hornbill ({Buceros rhinoceros}), native of the
East Indies. It has a large hollow hornlike process on
the bill. Called also {rhinoceros hornbill}. See
{Hornbill}.
(b) An African beefeater ({Buphaga Africana}). It alights on
the back of the rhinoceros in search of parasitic
insects.
[1913 Webster]

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