g 2 l 1 o 1 t 1 t 1 o 1 c 3 h 4 r 1 o 1 n 1 o 1 l 1 o 1 g 2 i 1 c 3 a 1 l 1
19 letters · 28 points in Scrabble
Meaning
adjective pertaining to the study of the evolution of languages from a common source
originFrom glottochronology + -ical.
Etymology from Wiktionary, CC BY-SA 3.0