opt

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OPT

Abbreviation for:
ocular photodynamic therapy
opisthotonos
optic pathway tumour
optician
oral provocation test 
outpatient treatment

opt

To select one thing rather than another.
References in periodicals archive ?
Nearly 15 percent of high school juniors in New Jersey opted out this year, while fewer than 5 percent of students in grades three through eight refused the tests, state education officials said.
And because they have all opted out, a legal loophole means no one can force them to offer her a place.
Recipients had previously opted out of direct marketing.