Akademik

helo-

I. combining form

Etymology: New Latin, from Greek helos — more at helodes

: marsh : bog

helobious

helophyte

II. combining form

Etymology: New Latin, from Greek hēlo-, from hēlos; perhaps akin to Latin vallus stake, palisade — more at wall

: nail

Heloderma

Helotium

Useful english dictionary. 2012.