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septicaemia
septicemia
septicidal
septillion
septime
septuagenarian
Septuagesima
Septuagint
septum
septuple
septuplet
sepulcher
sepulchral
sepulchre
seq.
sequacious
sequel
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septum

sep·tum [ séptəm ] (plural sep·ta [ séptə ])


noun 
Definition:
 
1. thin partition in organism: a thin partition or membrane dividing something into two or more cavities. Examples include the tissue separating the nostrils, each of the muscular membranes separating the chambers of the heart, and the internal dividing walls in the seed heads of poppies.

2. partition in machine: a thin partition that separates components in a machine

[Mid-17th century. < Latin, "partition" < sepire "enclose" < sepes "hedge"]

sep·tal [ sépt'l ] adjective
sep·tate [ sép tàyt ] adjective
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