fundˈament /-mənt/ noun (facetious)

The buttocks or anus

fundamenˈtalism noun

1. Belief in the literal truth of the Bible, against evolution, etc
2. Adherence to strictly orthodox religions or (figurative) other, eg political, doctrines

fundamenˈtalist noun

A person who professes such a belief or (figurative) other, eg political, beliefs considered fundamental (also adjective)

fundamentalˈity noun

fundamenˈtally adverb

fundamental particle same as elementary particle (see under element).

fundamental unit noun

Any of a number of arbitrarily defined units in a system of measurement, such as metre, second or candela, from which the other quantities in the system are derived