Webster
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Webster’s Revised Unabridged Dictionary · 1913

Medusa

Me·du′sa, n. [L., fr. Gr. Μέδουσα.] 1. (Class. Myth.) The Gorgon; or one of the Gorgons whose hair was changed into serpents, after which all who looked upon her were turned into stone.

2. [pl. Medusae.] (Zoöl.) Any free swimming acaleph; a jellyfish.

☞ The larger medusæ belong to the Discophora, and are sometimes called covered-eyed medusæ; others, known as naked-eyed medusæ, belong to the Hydroidea, and are usually developed by budding from hydroids. See Discophora, Hydroidea, and Hydromedusa.

Medusa bud (Zoöl.), one of the buds of a hydroid, destined to develop into a gonophore or medusa. See Athecata, and Gonotheca. — Medusa's head. (a) (Zoöl.) An astrophyton. (b) (Astron.) A cluster of stars in the constellation Perseus. It contains the bright star Algol.

Webster’s Revised Unabridged Dictionary, Noah Porter, editor (Springfield, Mass.: G. & C. Merriam, 1913). Public domain. Text as transcribed by MICRA, Inc., from Project Gutenberg. Changed for Deep Dive Bible: Greek, which our source spelled in Latin letters, set in Greek letters; entries of one spelling merged into one article; Greek words our source left out (shown as “?”), read from the 1898 printing, from the same plates (the Library of Congress’s copy), where the place could be found with certainty. Of the others, 1,362 (a word or a single letter each) were inferred by AI from the context by the dictionary’s own rules and are marked with a wavy underline (tap or point at one to see the note); the rest, which could not be inferred with confidence, are left as “?”.