Iota
any vowel after the fourth vowel
O is the 4th vowel in the English alphabet.
omicron
greek
The alpha, or any other short vowel ending of a Greek prefix metamorphoses into a longer vowel, usually eta, when combining a prefix with a root word beginning with a vowel.
vowel
In the word "method", the first, third, fourth and sixth letters are consonants; while the second and fifth letters are vowels.
The entire difference is found in the fourth letter of those words ... the remaining 8 letters are identical in both. In one of the words, the fourth letter is the vowel 'a', whereas in the other one, the fourth letter is the vowel 'i'. Their definitions are also different.
A = first U = second A = third I = fourth A = fifth
ETA (somethint to do with the H in greek)
when xephon takes over the accounts of greek durind the fourth century......:p
Yes in the form of η,Η and it is a vowel.