elaboration (n.)

1570s, in a physiological sense relating to tissue development, from Late Latin elaborationem (nominative elaboratio), noun of action from past participle stem of Latin elaborare "work out, produce by labor, endeavor, struggle," from ex "out" (see ex-) + laborare "to labor" (see labor (v.)). Meaning "act of working out in great exactness and detail" is from 1610s.