-ac

DEFINITION of -ac

forms adjectives: pertaining to, located in; As a prefix, a- is a privative (negating) morpheme meaning “without,” “not,” or “lacking” — indicating the absence of a structure, function, or condition. It attaches to Greek-derived roots. When the root begins with a vowel, it typically becomes an- to ease pronunciation. As a suffix, -a serves primarily as a grammatical/nominative ending in Latin and Greek nouns (especially neuter plural Latin forms and feminine singular forms), giving medical terms their standard noun form rather than carrying independent clinical meaning.

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ETYMOLOGY of -ac

greek From Greek -akos — an adjectival suffix denoting “of,” “belonging to,” or “pertaining to.” Passed into Latin as -acus and into English via French -ac or directly from Latin/Greek. Closely related to the more common suffix -ic (also from Greek -ikos)

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RELATED TERMS to -ac

• Cardiac — pertaining to the heart

• Iliac — pertaining to the ilium (relevant in urology for iliac vessel proximity in renal/ureteral surgery)

• Celiac — pertaining to the abdomen

• Maniac — pertaining to madness

• Hypochondriac — pertaining to the hypochondrium

• -al — parallel adjectival suffix (Latin origin)

• -ic — parallel adjectival suffix (Greek origin)

• -ary — parallel adjectival suffix (Latin origin)

• -ac pertaining to, located in

• -al

• -an

• -ar

• -ary place for

• -eal

• -ean

• -etic

• -ic drug agent

• -id condition (of) state (of)

• -ile capable of (being), like

• -ine

• -itic (to inflammation), drug agent

• -ive

• -otic

• -ous characterized by, full of

• -tic drug agent, person

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DERIVATIONS of -ac

TABLE definition AS Definition 
WHERE length(filter(roots, (word) => econtains([[]].roots, word))) > 0 AND file.name != [[]].file.name
SORT file.name ASC

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Query functionality

TABLE definition AS Definition
FROM #medroot
WHERE length(filter(definition, (word) => econtains([[]].definition, word))) > 0 AND file.name != [[]].file.name

Med terms dictionary Appendix A Prefixes Appendix B Combining Forms Appendix C Suffixes Appendix D Suffix forms