12-Letter Words Ending in ID

There are 13 12-letter words that end in ID. 1 are common words, such as HYPERTHYROID and AMPHIDIPLOID. A rarer one is SUBARACHNOID. In this set, O is the most frequent open letter (13 words). 1 words contain a doubled letter.

Full list 13

hyperthyroidamphidiploidcysticercoidhemispheroidphospholipidscolopendridspermatozoidxanthochroidhydrocolloidnucleocapsidorthopteroidplerocercoidsubarachnoid

About this list

Words
13 (1 common words)
Common example
hyperthyroid
Rare example
subarachnoid
Doubled letters
1
Ending in S
0
Most frequent letter
O (13)

Questions

How many 12-letter words ending in id are there?

13. 1 of them are common words.

What is a common example?

HYPERTHYROID is among the common words in this set.