11-Letter Words Matching _____YL____

There are 12 11-letter words that match _____YL____. 3 are common words, such as DICOTYLEDON and PROPHYLAXES. A rarer one is STAPHYLINID. 2 words contain a doubled letter.

Full list 12

dicotyledonprophylaxesprophylaxisanaphylaxesanaphylaxisapophyllitemalonylureasalicylatesspondylitissperrylitesspondylitesstaphylinid

About this list

Words
12 (3 common words)
Common example
dicotyledon
Rare example
staphylinid
Doubled letters
2
Ending in S
8

Questions

How many 11-letter words matching _____yl____ are there?

12. 3 of them are common words.

What is a common example?

DICOTYLEDON is among the common words in this set.