| 1 | English | thyroid | Of, relating to, or being the thyroid gland; Of,... |
| 2 | New Latin | thyreoīdēs | — |
| 3 | Ancient Greek | θῠρεοειδής | — |
| 4 | Ancient Greek | -ειδής | like, connected to, from the nature of, full of;... |
| 5 | Ancient Greek | -ής | adjective suffix |
| 6 | Proto-Indo-European | -ēs | Primarily forms adjectival bahuvrīhi compounds |
| 7 | Proto-Indo-European | -ess | — |
| 8 | Proto-Indo-European | -os | Creates action nouns or result nouns from verbs;... |