IPA: //ˈʃæŋkrɔɪdəl//
KK: /ˈtʃæŋkrɔɪdəl/
Relating to a specific type of bacterial infection that causes sores, known as chancroid.
The doctor diagnosed the patient with a chancroidal infection after examining the sores.
Chancroidal is derived from "chancroid" (from the Greek "chankron", meaning sore) and the suffix "-al" (meaning pertaining to). The term refers to something that is related to or characteristic of a chancroid, which is a type of sore or ulcer.
Think of 'chancroid' as a type of 'sore' and '-al' meaning 'pertaining to' — so 'chancroidal' means relating to that sore.