11-Letter Words Starting With EC

There are 20 11-letter words that start with EC. 6 are common words, such as ECHINODERMS and ECLECTICISM. A rarer one is ECTOTROPHIC. In this set, I is the most frequent open letter (19 words). 3 words contain a doubled letter.

Full list 20

echinodermseclecticismeconomizerseconomizingecotourismsecumenicismeconometriceccrinologyechovirusesecotouristsectomorphicectoplasmicectothermalectothermicecumenicistecumenicityechinococcieconomisingectopicallyectotrophic

About this list

Words
20 (6 common words)
Common example
echinoderms
Rare example
ectotrophic
Doubled letters
3
Ending in S
5
Most frequent letter
I (19)

Questions

How many 11-letter words starting with ec are there?

20. 6 of them are common words.

What is a common example?

ECHINODERMS is among the common words in this set.