12-Letter Words Matching H_________I_

There are 52 12-letter words that match H_________I_. 8 are common words, such as HELIOCENTRIC and HIEROGLYPHIC. A rarer one is HYPOCALCEMIC. 3 words contain a doubled letter.

Full list 52

Common words

heliocentrichieroglyphichorsemanshiphydrodynamichyperthyroidhypochondriahypoglycemiahypoglycemichagiographichallucinosishemispheroidhemodialysis
heliocentrichieroglyphichorsemanshiphydrodynamichyperthyroidhypochondriahypoglycemiahypoglycemichagiographichallucinosishemispheroidhemodialysisherpetologicheterocliticheterocyclichistogenesisholophrastichydrochlorichydrofluorichydrographichydrokinetichyperkinesiahyperostosishyperpyrexiahyperthermiahypertrophichypnogenesishypocoristichypothalamichysterogenicheliographichelmsmanshiphemerocallishenotheistichierophantichistogenetichomeomorphichomeothermichydrocolloidhydromorphichydrospherichyperendemichyperkinesishyperkinetichyperlipemiahyperlipemichyperostotichyperplastichypersthenichyperthermichypocalcemiahypocalcemic

About this list

Words
52 (8 common words)
Common example
heliocentric
Rare example
hypocalcemic
Doubled letters
3
Ending in S
7

Questions

How many 12-letter words matching h_________i_ are there?

52. 8 of them are common words.

What is a common example?

HELIOCENTRIC is among the common words in this set.