-ian +
(Latin: suffix form of -an from -ianus, a modifier of the main word to which it is attached: belonging to, coming from, being involved in, or being like something )
Appearing in such words as comedian, egalitarian, Bostonian, Italian, Smithsonian, mathematician, Alabamian, Californian, Arizonian, and Canadian. It is attached to the root of common or proper nouns with the meanings "of, pertaining to, from", or "like" the proper name appearing in the stem.
—Based on information from The Barnhart Dictionary of Etymology,
Edited by Robert K. Barnhart, The H.W. Wilson Company, 1988.
pyrotechnician
One skilled in pyrotechny; a maker of gunpowder, etc., or of fireworks.
ranarian
Frog-like; froggy.
saurian
1. Lizard; any of a former suborder of reptiles that included all lizards.
2. Relating to or resembling a lizard.
sectarian
A bigoted adherent of a sect; one whose views or sympathies are sectarian.
septuagenarian
1. A person who is in his/her seventies.
2. Someone who is seventy to seventy-nine years old.
vegeterian
1. One who lives wholly or principally upon vegetable foods; a person who on principle abstains from any form of animal food, or at least such as is obtained by the direct destruction of life.
2. A reference to animals that live on vegetables.
3. Consisting of vegetables or plants.
vocabularian
Someone who gives much or undue attention to words.