func·tion·ar·y 
(fŭngkshə-nĕr′ē)
(fŭngkshə-nĕr′ē)n. pl. func·tion·ar·ies
One who holds an office or a trust or performs a particular function; an official.
- heter-
- hetero
- hetero-
- heteroatom
- heterocercal
- heterochromatic
- heterochromatin
- heterochromatism
- heterochromosome
- heterochronic
- heterochronous
- heterochrony
- heterocycle
- heterocyclic
- heterocyst
- heterodactyl
- heterodactylous
- heterodactyly
- heterodox
- heterodoxy
- heterodyne
- heteroecious
- heteroecism
- heterogamete
- heterogametic