thyro-

English

Etymology tree

Proto-Indo-European *dʰwer-der.

Proto-Hellenic *tʰurā

Ancient Greek θῠ́ρᾱ (thŭ́rā)

Ancient Greek -εος (-eos)

Ancient Greek θῠρεός (thŭreós)

Proto-Indo-European *weyd-

Proto-Indo-European *-os

Proto-Indo-European *wéydos

Proto-Hellenic *wéidos

Ancient Greek εἶδος (eîdos)

Proto-Indo-European *-os

Proto-Indo-European *-ēs

Ancient Greek -ης (-ēs)

Ancient Greek -ειδής (-eidḗs)

Ancient Greek θῠρεοειδής (thŭreoeidḗs)bor.

New Latin thyreoīdēsbor.

English thyroid

Ancient Greek -ο- (-o-)der.

Latin -o-bor.

English -o-

English thyro-

From thyroid + -o-.

thyro-

thyroid

“thyro-”, in Lexico, Dictionary.com; Oxford University Press, 2019–2022.
“thyr-”, in Merriam-Webster.com Online Dictionary, Springfield, Mass.: Merriam-Webster, 1996–present.