1. "Once" functions as an adverb, conjunction, and noun in English. As an adverb, it means "one time" or "formerly." As a conjunction, it means "as soon as." And as a noun, it refers to "an instance" or "a single occurrence."2. "QD" is an abbreviation for "quaq...
OD means Once daily (also Outer Diameter and 828 more) Rating: 1 1 vote What is the abbreviation for Once daily?Once daily is abbreviated as OD (also QD, QD, o.d., OaD, q.d., QD, qd or qd)Share this Have you found the page useful?Please use the following to spread the word...