Semi-annual drill Synonyms

We can't find synonyms for the phrase "Semi-annual drill", but we have synonyms for terms, you can combine them.

Semi-annual Synonyms

Drill Synonyms

SD abbreviation

SD is an abbreviation for Semi-annual Drill

What does SD stand for?

SD stands for "Semi-annual Drill"

Definitions for Drill

(noun) an established and often automatic or monotonous series of actions followed when engaging in some activity
(noun) something done over and over in order to develop skill
(verb) to make a hole or series of holes in