(aviation, travel) Initialism of office ID.

Resembling; having the likeness of (usually including the concept of not being the same despite the likeness, but counterexamples exist). / (less commonly) Of, pertaining to, or related to.

A fragile spore produced by some fungi. / The fungus Erysiphe necator (= Uncinula necator), which produces powdery mildew in grapes.

plural of oidium

infection with Oidium species; blastomycosis

Relating to, or infected with oidium

Of or relating to oidiomycosis.

Of or relating to the fungus genus Oidium.