periodontist

per·i·o·don·tist

[per-ee-uh-don-tist]
noun
a specialist in periodontics.

Origin:
1915–20; periodont(ics) + -ist

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2013.
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American Heritage
Medical Dictionary

periodontist per·i·o·don·tist (pěr'ē-ə-dŏn'tĭst)
n.
A dentist who specializes in periodontics.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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00:10
Periodontist is always a great word to know.
So is ort. Does it mean:
a scrap or morsel of food left at a meal.
a printed punctuation mark (‽), available only in some typefaces, designed to combine the question mark (?) and the exclamation point (!), indicating a mixture of query and interjection, as after a rhetorical question.
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