词根：-astr-, -aster-, -stell-

【词根含义】：星

【词根来源】：-astr-和-aster-来源于希腊语astron/aster(星),-stell-来源于拉丁语名词stella, stellae, f(星)。均可追溯至原始印欧语ster-。

【同源单词】：astral, astrodome, astroid, astrology, astronaut

词根：-naut-, -nav-

【词根含义】：船

【词根来源】：-naut-(船)来源于希腊语naus(船);-nav-(船)来源于拉丁语中navis(船)及其派生词navia(舰队)和navalis(船的)。

【同源单词】：aeronaut, aeronautics, aquanaut, astronaut, astronautic

词根词缀：astro-, astr-

【来源及含义】Greek: star, stars, star shaped; also pertaining to outer space

【同源单词】apastron, archaeoastronomer, archaeoastronomy, astro-alchemist, astrobiology, astroblast

词根词缀：-ical

【来源及含义】Latin: from -icalis, a suffix that forms adjectives from nouns; of or having to do with; having the nature of; constituting or being; containing or made up of; made by or caused by; like, characteristic of; art or system of thought; chemical terms

【同源单词】abdominovesical, abiological, ableptical, academical, acarological, acarologically

词根词缀：naus-, nau-, naut-, -naut, -nautical, -nautics

【来源及含义】Greek: ship; sailor; navigation

【同源单词】ad nauseam, aeronausiphobia, aeronaut, aeronautics, aeronautism, aquanaut