Back to dictionary
astr
(AS-tur)star
Greek for star. Astronomy is the study of stars; an asterisk is a small star.
rootGreek
Earth, water, skySpellings:astraster
Example words
astronaut
a person who travels among the stars
astronomy
the study of stars and space
asterisk
a small star symbol (*)
disaster
originally, a bad star — a misfortune
Common Core alignment
Grades served: 4, 5
- L.4.4bUse common, grade-appropriate Greek and Latin affixes and roots as clues to the meaning of a word (e.g., telegraph, photograph, autograph).
- L.5.4bUse common, grade-appropriate Greek and Latin affixes and roots as clues to the meaning of a word (e.g., photograph, photosynthesis).
Related roots
Earth, water, sky. Roots about the natural world: land, water, stars, and sky.
Browse all earth, water, sky roots →L.4.4bL.5.4b