Medical Terminology Prefixes and SuffixesOnline version A prefix is added to the beginning of the word to influence of that term A suffix is always added to the end of a word to complete that term by Victoria Huber 1 Identify the prefixes describing direction, quantity, size and amount 2 Identify the contrasting prefixes 3 Identify the suffixes meaning "pertaining to" 4 Identify the suffixes meaning "abnormal condition" ab- ex- macro- post- in- inter- hyper- intra- sub- super- hypo- dys- eu- -ic -ac -ory -al -an -ar -ary -ial -esis -iasis -ago