Main Entry: glot·to·chro·nol·o·gy

Pronunciation: \ˌglä-tō-krə-ˈnä-lə-jē\

Function: noun

Date: 1953

: a linguistic method that uses the rate of vocabulary replacement to estimate the date of divergence for distinct but genetically related languages

— glot·to·chro·no·log·i·cal \-ˌkrä-nə-ˈlä-ji-kəl, -ˌkrō-\ adjective