Medterms N & O

Front 1

Nasal

Back 1

Pertaining to the nose.

Front 2

Nausea

Back 2

Unpleasant sensation in the upper abdomen, often leading to vomiting. The term comes from the Greek nausea, meaning “sea sickness.”

Front 3

Necrosis

Back 3

Death of cells

Front 4

Necrotic

Back 4

Pertaining to death of cells.

Front 5

Needle biopsy

Back 5

Removal of living tissue for microscopic examination by inserting a hallow needle through the skin.

Front 6

Neonatal

Back 6

Pertaining to new birth; the first 4 weeks after birth.

Front 7

Neoplasm

Back 7

Any new growth of tissue; a tumor.

Front 8

Neoplastic

Back 8

Pertaining to a new growth, or NEOPLASM.

Front 9

Nephrectomy

Back 9

Removal (excision) of a kidney

Front 10

Nephritis

Back 10

Inflammation of kidneys.

Front 11

Nephrolithiasis

Back 11

Condition of kidney stones.

Front 12

Nephrologist

Back 12

Specialist in the diagnosis and treatment of kidney diseases.

Front 13

Nephrology

Back 13

Study of the kidney and its diseases.

Front 14

Nephropathy

Back 14

Disease of the kidney.

Front 15

Nephrosis

Back 15

Abnormal condition of the kidney. Nephrosis is often associated with a deterioration of the kidney tubules.

Front 16

Nephrostomy

Back 16

Opening from the kidney to the outside of the body.

Front 17

Nervous system

Back 17

Organs (brain, spinal cord, and nerves) that transmit electrical messages throughout the body.

Front 18

Neural

Back 18

Pertaining to nerves.

Front 19

Neuralgia

Back 19

Nerve pain.

Front 20

Neuritis

Back 20

Inflammation of a nerve.

Front 21

Neuroglial cells

Back 21

See GLIAL CELLS.

Front 22

Neurologist

Back 22

Specialist in the diagnosis and treatment of nervous disorders.

Front 23

Neurology

Back 23

Study of the nervous system and nerve disorders.

Front 24

Neuropathy

Back 24

Disease of nervous tissue.

Front 25

Neurosurgeon

Back 25

Physician who operates on the organs of the nervous system (brain, spinal cord, and nerves).

Front 26

Neurotomy

Back 26

Incision of a nerve.

Front 27

Nevus

Back 27

Pigmented lesion on the skin; a mole.

Front 28

Nitroglycerin

Back 28

Drug that relaxes muscle and opens blood vessels.

Front 29

Nocturia

Back 29

Excessive urination at night.

Front 30

Nose

Back 30

Structure that is the organ of smell and permits air to enter and leave the body.

Front 31

Nosocomial

Back 31

Pertaining to or originating in a hospital. A nosocomial infection is acquired during hospitalization.

Front 32

Obstetric

Back 32

Pertaining to pregnancy, labor, and delivery of a baby.

Front 33

Obstetrician

Back 33

Specialist in the delivery of a baby and care of the mother during pregnancy and labor.

Front 34

Obstetrics

Back 34

Practice or branch of medicine concerned with the management of women during pregnancy, childbirth, and the period just after delivery of the infant.

Front 35

Ocular

Back 35

Pertaining to the eye.

Front 36

Oncogenic

Back 36

Pertaining to producing (-GENIC) tumors.

Front 37

Oncologist

Back 37

Physician specializing in the study and treatment of tumors.

Front 38

Oncology

Back 38

Study of tumors.

Front 39

Onycholysis

Back 39

Separating (-LYS) of a nail (ONYCH/O) from its foundation (bed).

Front 40

Oocyte

Back 40

Egg cell (ovum).

Front 41

Oophorectomy

Back 41

Removal of an ovary or ovaries.

Front 42

Oophoritis

Back 42

Inflammation of an ovary.

Front 43

Ophthalmologist

Back 43

Specialist in the study of the eye and the treatment of eye disorders.

Front 44

Ophthalmology

Back 44

Study of the eye; the diagnosis and treatment of eye disorders.

Front 45

Ophthalmoscope

Back 45

Instrument used to visually examine the eye.

Front 46

Optic nerve

Back 46

Nerve in the back of the eye that transmits light waves to the brain.

Front 47

Optician

Back 47

Nonmedical specialist trained to provide eyeglasses by filling prescriptions.

Front 48

Optometrist

Back 48

Nonmedical specialist trained to examine and test eyes and prescribe corrective lenses.

Front 49

Oral

Back 49

Pertaining to the mouth.

Front 50

Orchidectomy

Back 50

Removal (excision) of a testicle or testicles.

Front 51

Orchiectomy

Back 51

Removal (excision) of a testicle or testicles.

Front 52

Orchiopexy

Back 52

Surgical fixation of the testicle (testis) into its proper location within the scrotum. This surgery corrects CRYPTORCHIDISM.

Front 53

Orchitis

Back 53

Inflammation of a testicle.

Front 54

Organ

Back 54

Independent part of the body composed of different tissues working together to do a specific job.

Front 55

Orthodontist

Back 55

Dentist specializing in straightening teeth.

Front 56

Orthopedist

Back 56

Specialist in the surgical correction of the musculoskeletal disorders. This physician was originally concerned with straightening (ORTH/O-) bones in the legs of children (PED/O) with deformities.

Front 57

Osteitis

Back 57

Inflammation of a bone.

Front 58

Osteoarthritis

Back 58

Inflammation of bones and joints. Osteoarthritis is a disease of older people and is marked by stiffness, pain, and degeneration of joints.

Front 59

Osteogenic sarcoma

Back 59

Malignant (cancerous) tumor of bone (-GENIC means produced in).

Front 60

Osteoma

Back 60

Tumor (benign) of bone.

Front 61

Osteomyelitis

Back 61

Inflammation of a bone and bone marrow. Osteomyelitis is caused by a bacterial infection.

Front 62

Osteopenia

Back 62

Deficiency (-PENIA) of bone tissue.

Front 63

Osteoporosis

Back 63

Decrease in bone mass with formation of pores or spaces in normally mineralized bone tissue. This condition is more serious than osteopenia.

Front 64

Osteotomy

Back 64

Incision of a bone.

Front 65

Otalgia

Back 65

Pain in an ear.

Front 66

Otitis

Back 66

Inflammation of an ear.

Front 67

Otolaryngologist

Back 67

Specialist in the treatment of diseases of the ear, nose, and throat.

Front 68

Ovarian

Back 68

Pertaining to an ovary or ovaries.

Front 69

Ovarian cancer

Back 69

Malignant condition of the ovaries.

Front 70

Ovarian cyst

Back 70

Sac containing fluid or semisolid material in or on the ovary.

Front 71

Ovary

Back 71

One of two organs in the female abdomen that produces egg cells and female hormones.

Front 72

Ovum

Back 72

Egg cell (plural: ova).

Front 73

Oxygen

Back 73

Colorless, odorless gas that is essential to sustaining life.