Definition of "plus"
plus
/plʌs/
verb
third-person singular simple present pluses or plusses, present participle plusing or plussing, simple past and past participle plused or plussed
(optometry) To increase a correction.
third-person singular simple present pluses or plusses, present participle plusing or plussing, simple past and past participle plused or plussed
(optometry) To increase a correction.