postnasal = after
The suffix of "postnasal" is "-al".
Nothing called Perineal postnasal drip. It should be perennial postnasal drip. perennial = lasting or active throughout the whole year postnasal drip = mucopurulent discharge from the posterior nares. so it is perennial postnasal drip. SK :)
"post-" is the word part in postnasal. It means "after" or "behind."
The combining form for "gingivo-" is "gingiv/o-".
The combining form for dermatologist is dermat/o.
The combining form for potassium is kal/i.
The combining form meaning "one who specializes in" is "-ologist".
The combining form is that the prefix osteo- is added.
Combining form for shape
The combining form for imperfect is dysto-.
The combining form for sugar is "glyc/o".