Word origin
[1955–60; ‹ Gk
órthōsis a making straight, guidance, equiv. to
orthō- (var. s. of
orthoûn to straighten, v. deriv. of
orthós straight) +
-sis -sis]This word is first recorded in the period 1955–60. Other words that entered Englishat around the same time include: backgrounder, cassette, life-support, rite of passage, software-sis is a suffix appearing in loanwords from Greek, where it was used to form from verbsabstract nouns of action, process, state, condition, etc. Other words that use theaffix -sis include: analysis, crisis, dieresis, prolepsis, symbiosis