The "e" preceding the "r" is kept in American-inflected forms of nouns and verbs, for example, , which are respectively in British English. According to the "OED", "" is a ""word ... of 3 syllables (in careful pronunciation)"" (i.e., ), yet there is no vowel in the spelling corresponding to the second syllable (). The OED third edition (revised entry of June 2016) allows either two or three syllables. On the Oxford Dictionaries Online website, the three-syllable version is listed only as the American pronunciation of "centering". The "e" is dropped for other derivations, for example, "central", "fibrous", "spectral". But, the existence of related words without "e" before the "r" is not proof for the existence of an "-re" British spelling: for example, "entry" and "entrance" come from "enter", which has not been spelled "entre" for centuries.