12 letters · 14 points in Scrabble
noun the theory and practice of navigation through air or space
originEtymology tree English astronaut Proto-Indo-European *-ikos Proto-Italic *-ikos Latin -icuslbor. Old French -iquebor. Middle English -ik English -ic Old English -as Middle English -es English -s English -ics English astronautics From astronaut + -ics.
Etymology from Wiktionary, CC BY-SA 3.0