-ician
(Greek: a suffix; meaning, specialist in, practitioner of)
academician
A member of an academy or society concerned with the arts or sciences.
acoustician
1. A specialist in acoustics.
2. Someone who fits hard-of-hearing people with hearing aids.
aesthetician
A critic concerned with the theory of beauty and the fine arts.
agrotechnician, agrotechnologist
Someone who uses technological devices and principles in agriculture to improve crop production.
apician
arctician
Someone who is skilled in navigating the arctic regions.
audiometrician
1. A technician specializing in the measurement of hearing ability (audiometry).
2. A person trained to measure auditory threshold, and, usually, to carry out a wide variety of other audiological investigations.
bariatrician
A health practitioner specializing in bariatrics.
beautician
biometrician
1. Someone who specializes in the science of biometry, or biometrics, which is the study biostatistics including the calculation of the probable duration of human life.
2. A person who uses statistical techniques to analyze biological data.
clinician
cosmetician
1. Someone who makes, or sells, cosmetics; or who applies them professionally.
2. Someone who works in a beauty parlor.
cybernetician, cyberneticist
A specialist in cybernetics.
diagnostician
1. A person who diagnoses, especially a physician specializing in medical diagnostics.
2. An expert in making diagnoses; especially, a medical doctor.
3. Someone with special skills in identifying the cause or nature of a problem even in areas other than medical.
diagnosticians
A guess of diagnosticians.