How Do You Spell OESTR?
The spelling of the word "oestr" is unique and may seem confusing at first. Phonetically, the word is pronounced as /iːstər/. The reason for this particular spelling is due to its origin in British English, where the diphthong "oe" was used as a replacement for the letter "e" in words derived from Greek. "Oestr" is an alternative spelling for "oestrous," which means "pertaining to estrus," or the reproductive cycle in animals. This spelling is now largely superseded by the more common spelling "estrous."
