Fitness

来自Big Physics
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wiktionary

ref

From fit +‎ -ness, 16th century, physical sense from 1935.


etymonline

ref

fitness (n.)

1570s, "state or quality of being suitable," from fit (adj.) + -ness. Meaning "state of being physically fit" is from 1935.

取自“https://www.bigphysics.org/index.php?title=Fitness&oldid=22581”