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：-ator

【来源及含义】Latin: a suffix that forms masculine nouns from verbs

【同源单词】arbitrator, astrogator, auscultator, aviator, dictator, emancipator

词根词缀：-or; -our

【来源及含义】Latin: a suffix; state of, result of; he who, that which

【同源单词】abdicator, abductor, ablator, acanthor, accelerator, adductor