10-Letter Words Matching T_______M_

There are 20 10-letter words that match T_______M_. 7 are common words, such as TELLURIUMS and TERRARIUMS. A rarer one is TRITHEISMS. In this set, S is the most frequent open letter (18 words). 6 words contain a doubled letter.

Full list 20

telluriumsterrariumsterrorismsthralldomstransformstrapeziumstribalismstetragramstrichotomytalmudismstarantismstectonismstenaculumstenebrismsterraformsthymectomytoxoplasmatrienniumstrifoliumstritheisms

About this list

Words
20 (7 common words)
Common example
telluriums
Rare example
tritheisms
Doubled letters
6
Ending in S
17
Most frequent letter
S (18)

Questions

How many 10-letter words matching t_______m_ are there?

20. 7 of them are common words.

What is a common example?

TELLURIUMS is among the common words in this set.