p 3 a 1 r 1 s 1 e 1 c 3
6 letters · 10 points in Scrabble
Meaning
noun a unit of astronomical length based on the distance from Earth at which stellar parallax is 1 second of arc; equivalent to 3.262 light years
originContraction of parallax second.
Etymology from Wiktionary, CC BY-SA 3.0