sper·ma·ce·ti 
(spûr′mə-sētē, -sĕtē)
(spûr′mə-sētē, -sĕtē)n. pl. sper·ma·ce·tis
A white waxy substance obtained chiefly from the head of the sperm whale, consisting of various esters of fatty acids and formerly used for making candles, ointments, and cosmetics.
[Middle English, from Medieval Latin spermacētī : Late Latin sperma, semen; see SPERM1 + Latin cētī, genitive of cētus, whale; see CETUS.]
- speechlessness
- speechmaker
- speechmaking
- speech pathologist
- speech pathology
- speech therapist
- speech therapy
- speechwriter
- speechwriting
- speed
- speed bag
- speedball
- speedboat
- speedboater
- speedboating
- speed brake
- speed bump
- speed chess
- speed dating
- speed dial
- speeder
- speedily
- speediness
- speeding
- speed limit