Ch 2, Suffixes and Plural endings Tools A B -ia, --ism, -sis, -y Suffixes that mean "Condition Of" -as, -al, -ar, -ary. -ic, -ical, -ous, -ile Adjective suffixes meaning "pertaining to". -form Adjective suffix that means "like or resembling". -oid Adjective suffix that means "resembling" -logy Medical Specialty suffix that means "study of". -ist, -ian Medical specialty suffix that means "specialist in a field of study". -iantrics, -iatry Medical specialty suffix that means "medical specialty". a Plural ending is " ae ". en Plural ending is " ina". ex, ix Plural ending is " ices". is Plural ending is " es ". nx (anx, inx, ynx) Plural ending is " nges ". on Plural ending is " a ". um Plural ending is " a ". us Plural ending is " i ".