Neptune's Largest Moon
This page is the CodyCross answer for the clue below from Space Exploration, Group 918, Puzzle 3 (Valentina Tereshkova).
Question is: Neptune's Largest Moon
and the answer is: TRITON
Word Meaning:
TRITON — (particle physics) the nucleus of a tritium atom, consisting of a proton and two neutrons.
Definitions from Wiktionary.