Observation biplanes Synonyms

We can't find synonyms for the phrase "Observation biplanes", but we have synonyms for terms, you can combine them.

Observation Synonyms

Biplanes Synonyms

OB abbreviation

OB is an abbreviation for Observation Biplanes

What does OB stand for?

OB stands for "Observation Biplanes"

Definitions for Observation

(noun) a state of being aware
(noun) the following of a custom , rule, or law
(noun) the act of observing; taking a patient look