词根词缀：calypto-, calypt-

【来源及含义】Greek: covered, cover; hide, hidden; conceal, concealed

【同源单词】apocalypse, apocalypst, apocalyptic, apocalyptic literature, apocalyptic number, apocalyptical

词根词缀：spermo-, sperm-, spermato-, spermat-

【来源及含义】Latin: seed, germ; pertaining to semen

【同源单词】angiosperm, eucalyptol, gymnosperm, monospermous, polyspermy, spermal

词根词缀：theco-, thec-, the-, theca-, theci-, -thecial, -thecae, -thecas, -thecium, -theca, -thec, -thecal, -thecial, -thecae, -thecas, -thecs, -tecs

【来源及含义】Greek > Latin: case, capsule, sheath, container, receptacle [also: a placing, a setting, a putting]; "a place where" something is kept

【同源单词】amphithecium, apothecary, apothecium, athetize, athetoid, athetosis