septum
UK[ˈsɛptəm]US[ˈsɛptəm]
n
a thin wall or membrane that separates two cavities or soft masses of tissue in an animal or plant.
n
a partition separating two chambers, such as that between the nostrils or the chambers of the heart.
Morpheme Breakdown
sept
um
sept
partition
um
noun suffix
Etymology
the word septum originates from the latin 'saeptum', the neuter past participle of 'saepire', meaning 'to fence in or enclose'. this latin verb is itself derived from 'saepes', meaning 'a hedge or fence'. the core concept is that of a dividing barrier, which evolved from the physical idea of a fence or hedge to the anatomical sense of a thin partition within a biological structure. the modern english term retains this literal sense of a dividing wall, directly applying it to specialized contexts in biology and medicine.
Analysis
Structure: sept (partition) + um (noun suffix)
sept is from latin 'saeptum', meaning 'a fence, enclosure, partition'. um is a latin neuter noun suffix.
Examples
the nasal septum divides the two nostrils.
a deviated septum can cause breathing difficulties.
the interventricular septum is a crucial wall within the heart.