Etymology of the English word proline
the English word proline
derived from the English word pyrrolidine
derived from the English word pyrrole
derived from the Greek word purrhos, πυῤῥός (fire-like; flame- colored; fire-like; (specially), flame- colored)
using the Greek suffix -ole
derived from the Greek word purros, πυρρός
using the English suffix -ine
using the English suffix -id