a·can·thoid 
(ə-kănthoid′)
(ə-kănthoid′)adj.
Shaped like a thorn or spine.
- irreconcilable
- irreconcilably
- irrecoverable
- irrecoverably
- irrecusable
- irrecusably
- irredeemable
- irredeemably
- irredenta
- irredentism
- irredentist
- irreducibility
- irreducible
- irreducibleness
- irreducibly
- irrefragability
- irrefragable
- irrefragably
- irrefrangible
- irrefrangibly
- irrefutability
- irrefutable
- irrefutably
- irreg.
- irregardless