資料來源 : pyDict
乳齒象
資料來源 : Webster's Revised Unabridged Dictionary (1913)
Mastodon \Mas"to*don\, n. [Gr. ? the breast + ?, ?, a tooth. So
called from the conical projections upon its molar teeth.]
(Paleon.)
An extinct genus of mammals closely allied to the elephant,
but having less complex molar teeth, and often a pair of
lower, as well as upper, tusks, which are incisor teeth. The
species were mostly larger than elephants, and their romains
occur in nearly all parts of the world in deposits ranging
from Miocene to late Quaternary time.
資料來源 : WordNet®
mastodon
n : extinct elephant-like mammal that flourished worldwide from
Miocene through Pleistocene times; differ from mammoths
in the form of the molar teeth [syn: {mastodont}]