Definify.com
Webster 1913 Edition
Septum
‖
Sep′tum
,Noun.
pl.
Septa
(#)
. [L.
septum
, saeptum
, an inclosure, hedge, fence, fr. sepire
, saepire
, to hedge in, inclose.] 1.
A wall separating two cavities; a partition;
as, the nasal
. septum
2.
(Bot.)
A partition that separates the cells of a fruit.
3.
(Zool.)
(a)
One of the radial calcareous plates of a coral.
(b)
One of the transverse partitions dividing the shell of a mollusk, or of a rhizopod, into several chambers. See Illust. under
Nautilus
. (c)
One of the transverse partitions dividing the body cavity of an annelid.