former common English transliteration of Muhammad.
The worst of letting the learned gentry bully us out of our traditional Mahometan & Mahomet ... is this: no sooner have we tried to be good & learnt to say, or at least write, Mohammed than they are fired with zeal to get us a step or two further on the path of truth, which at present seems likely to end in Muhammad with a dot under the h .... [H.W. Fowler, "A Dictionary of Modern English Usage," 1926]
<a href="https://www.etymonline.com/word/Mohammedan">Etymology of Mohammedan by etymonline</a>
Harper, D. (n.d.). Etymology of Mohammedan. Online Etymology Dictionary. Retrieved $(datetime), from https://www.etymonline.com/word/Mohammedan