Phy‐se″ter (?), n. [L., fr. Gr. �, fr. � to blow: cf. F. physétère.] 1. (Zoöl.) The genus that includes the sperm whale.
2. A filtering machine operated by air pressure.
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Webster's Dictionary 1913
Webster's Revised Unabridged Dictionary, C. & G. Merriam Co., 1913.