n.
Pronunciation: ˌ as-tr ə - ' no ̇ -tiks, - ' nä-
Function: noun plural but singular or plural in construction
Date: 1928
: the science of the construction and operation of vehicles for travel in space beyond the earth's atmosphere
– as · tro · nau · tic \ -tik \ or as · tro · nau · ti · cal \ -ti-k ə l \ adjective
– as · tro · nau · ti · cal · ly \ -ti-k( ə -)l ē \ adverb