hygrothermograph

English

Etymology tree

English hygro-

Proto-Indo-European *gʷʰer-

Proto-Indo-European *-mos

Proto-Indo-European *gʷʰermos

Proto-Hellenic *kʷʰermós

Ancient Greek θερμός (thermós)der.

English thermo-

Proto-Indo-European *gerbʰ-

Proto-Hellenic *grə́pʰō

Ancient Greek γράφω (gráphō)

Proto-Indo-European *-os

Proto-Hellenic *-os

Ancient Greek -ος (-os)

Ancient Greek -γρᾰ́φος (-grắphos)der.

English -graph

English hygrothermograph

hygrothermograph (plural hygrothermographs)

(physics, meteorology) An instrument that measures, and records, both humidity and temperature.