accretional

adjective

ac·​cre·​tion·​al ə-ˈkrē-shnəl 

-shə-nᵊl,

a-

: relating to, marked by, or formed by accretion : accretionary

… accretional remnants left over from the formation of the terrestrial planets …

—Paul R. Weissman et al., Encyclopedia of the Solar System, 1999

accretional growth

Word History

First Known Use

1843, in the meaning defined above

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