Occupational
来自Big Physics
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Middle English: via Old French from Latin occupatio(n- ), from the verb occupare (see occupy). occupation (sense 2 of the noun) dates from the mid 16th century.
wiktionary
From occupation(noun) + -al(suffix forming adjectives).
etymonline
occupational (adj.)
"of or pertaining to a particular occupation, calling, or trade," 1850, from occupation + -al (1). Occupational therapy is attested by 1918; occupational risk by 1951. Related: Occupationally.
