Medical Terminology Reference
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Use this reference to see how common medical terms are created using the various prefixes, suffixes, and root words. |
obstetrics
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Prefix: Prefix Definition: 1st Root Word: obstetr/o 1st Root Definition: pregnancy; birth 2nd Root Word: 2nd Root Word Definition: Suffix: -ic Suffix Definition: pertaining to Definition: pertaining to the care of a woman during pregnancy and after the birth |
oculist
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Prefix: Prefix Definition: 1st Root Word: ocul/o 1st Root Definition: eye 2nd Root Word: 2nd Root Word Definition: Suffix: -ist Suffix Definition: specialist Definition: specialist in the disease and treatment of the eye |
oligotrophy
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Prefix: Prefix Definition: 1st Root Word: olig/o 1st Root Definition: scanty 2nd Root Word: troph/o 2nd Root Word Definition: nourishment; development Suffix: -ic Suffix Definition: pertaining to Definition: pertaining to nutrition deficiency |
omphalectomy
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Prefix: Prefix Definition: 1st Root Word: omphal/o 1st Root Definition: umbilicus (navel) 2nd Root Word: 2nd Root Word Definition: Suffix: -ectomy Suffix Definition: removal; excision; resection Definition: surgical removal; excision; resection of the navel |
oncologist
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Prefix: Prefix Definition: 1st Root Word: onc/o 1st Root Definition: tumor 2nd Root Word: 2nd Root Word Definition: Suffix: -logist Suffix Definition: specialist in the study of Definition: specialist in the diagnosing and treatment of cancer |
oncology
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Prefix: Prefix Definition: 1st Root Word: onc/o 1st Root Definition: tumor 2nd Root Word: 2nd Root Word Definition: Suffix: -logy Suffix Definition: study (process of) Definition: study of tumors |
onychomycosis
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Prefix: Prefix Definition: 1st Root Word: onch/o 1st Root Definition: nail (of fingers or toes) 2nd Root Word: myc/o 2nd Root Word Definition: fungus Suffix: -osis Suffix Definition: condition, usually abnormal Definition: abnormal condition of a fungal infection of the finger or toe nails |
onychophagy
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Prefix: Prefix Definition: 1st Root Word: onch/o 1st Root Definition: nail (of fingers or toes) 2nd Root Word: phag/o 2nd Root Word Definition: eat; swallow Suffix: -y Suffix Definition: condition; process Definition: condition of biting; eating finger or toe nails |
oogenesis
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Prefix: Prefix Definition: 1st Root Word: o/o 1st Root Definition: egg 2nd Root Word: 2nd Root Word Definition: Suffix: -genesis Suffix Definition: producing; forming Definition: producing; forming of the ovum (egg cell) |
oophorectomy
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Prefix: Prefix Definition: 1st Root Word: oophor/o 1st Root Definition: ovary 2nd Root Word: 2nd Root Word Definition: Suffix: -ectomy Suffix Definition: removal; excision; resection Definition: surgical removal; excision; resection of an ovary |
ophthalmology
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Prefix: Prefix Definition: 1st Root Word: ophthalm/o 1st Root Definition: eye 2nd Root Word: 2nd Root Word Definition: Suffix: -logy Suffix Definition: study (process of) Definition: study of treatment and disease of the eye |
optometrist
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Prefix: Prefix Definition: 1st Root Word: opt/o 1st Root Definition: eye; vision 2nd Root Word: 2nd Root Word Definition: Suffix: -ist Suffix Definition: specialist Definition: specialist in the treatment and disease of the eye |
optometry
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Prefix: Prefix Definition: 1st Root Word: opt/o 1st Root Definition: eye; vision 2nd Root Word: 2nd Root Word Definition: Suffix: -metry Suffix Definition: process of measuring Definition: process of measuring the eye’s strength and range |
oral
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Prefix: Prefix Definition: 1st Root Word: or/o 1st Root Definition: mouth 2nd Root Word: 2nd Root Word Definition: Suffix: -al Suffix Definition: pertaining to Definition: pertaining to the mouth |
orchiectomy
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Prefix: Prefix Definition: 1st Root Word: orchi/o 1st Root Definition: testis 2nd Root Word: 2nd Root Word Definition: Suffix: -ectomy Suffix Definition: removal; excision; resection Definition: surgical removal; excision; resection of the testis |
orthodontist
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Prefix: Prefix Definition: 1st Root Word: orth/o 1st Root Definition: straight 2nd Root Word: odont/o 2nd Root Word Definition: tooth Suffix: -ist Suffix Definition: specialist Definition: specialist in the straightening of teeth |
osseous
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Prefix: osse- Prefix Definition: bony 1st Root Word: 1st Root Definition: 2nd Root Word: 2nd Root Word Definition: Suffix: -ous Suffix Definition: pertaining to Definition: pertaining to or composed of bone |
osteoarthritis
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Prefix: Prefix Definition: 1st Root Word: oste/o 1st Root Definition: bone 2nd Root Word: arthr/o 2nd Root Word Definition: joint Suffix: -itis Suffix Definition: inflammation Definition: deterioration of joint cartilage and the underlying bone (a form of arthritis) |
osteochondritis
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Prefix: Prefix Definition: 1st Root Word: oste/o 1st Root Definition: bone 2nd Root Word: chondr/o 2nd Root Word Definition: cartilage Suffix: -itis Suffix Definition: inflammation Definition: inflammation of the bone and cartilage |
osteoclasis
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Prefix: Prefix Definition: 1st Root Word: oste/o 1st Root Definition: bone 2nd Root Word: 2nd Root Word Definition: Suffix: -clasis Suffix Definition: to break Definition: surgical break down of bone tissue |
osteogenesis
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Prefix: Prefix Definition: 1st Root Word: oste/o 1st Root Definition: bone 2nd Root Word: 2nd Root Word Definition: Suffix: -genesis Suffix Definition: producing; forming Definition: formation of bone |
osteomalacia
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Prefix: Prefix Definition: 1st Root Word: oste/o 1st Root Definition: bone 2nd Root Word: 2nd Root Word Definition: Suffix: -malacia Suffix Definition: softening Definition: softening of bone |
osteopathy
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Prefix: Prefix Definition: 1st Root Word: oste/o 1st Root Definition: bone 2nd Root Word: 2nd Root Word Definition: Suffix: -pathy Suffix Definition: disease; emotion Definition: disease of bone |
osteopenia
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Prefix: Prefix Definition: 1st Root Word: oste/o 1st Root Definition: bone 2nd Root Word: 2nd Root Word Definition: Suffix: -penia Suffix Definition: deficiency Definition: deficiency of bone mass |
osteoporosis
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Prefix: Prefix Definition: 1st Root Word: oste/o 1st Root Definition: bone 2nd Root Word: 2nd Root Word Definition: Suffix: -porosis Suffix Definition: condition of pores (spaces) Definition: condition of weak; porous; brittle bones |
osteosarcoma
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Prefix: Prefix Definition: 1st Root Word: oste/o 1st Root Definition: bone 2nd Root Word: sarc/o 2nd Root Word Definition: flesh (connective tissue) Suffix: -oma Suffix Definition: tumor; mass; fluid collection Definition: malignant tumor of bone |
osteotomy
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Prefix: Prefix Definition: 1st Root Word: oste/o 1st Root Definition: bone 2nd Root Word: 2nd Root Word Definition: Suffix: -tomy Suffix Definition: process of cutting Definition: surgical process of cutting bone |
otology
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Prefix: Prefix Definition: 1st Root Word: ot/o 1st Root Definition: ear 2nd Root Word: 2nd Root Word Definition: Suffix: -logy Suffix Definition: study (process of) Definition: study of the ear and it’s diseases |
ovariectomy
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Prefix: Prefix Definition: 1st Root Word: ovari/o 1st Root Definition: ovary 2nd Root Word: 2nd Root Word Definition: Suffix: -ectomy Suffix Definition: removal; excision; resection Definition: surgical removal; excision; resection of the ovary |
ovogenesis
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Prefix: Prefix Definition: 1st Root Word: ov/o 1st Root Definition: egg 2nd Root Word: 2nd Root Word Definition: Suffix: -genesis Suffix Definition: producing; forming Definition: producing or forming of an ovum |