[ukcol]

When referring to a tuned circuit designed to attenuate signals at a particular frequency is it correct to speak of a rejector circuit or a rejecter circuit?

I have always considered the former to be correct but Micro-soft Word underlines it in red suggesting that it is spelt incorrectly. As I type "rejector" for this thread it is also underlined in red.

I have always assumed that the difference is explained by the difference between English and American English spelling but research on the web suggests this is not the case. I didn't manage to find any particularly helpful information on this subject on the web, hence this post.

Searching this forum site has revealed that both spellings have been used in posts, although "rejector" seems to have been used most often.