MedTerms Medical Dictionary

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S1-S5 (sacral vertebrae)
SA node
Sacral
Sacral vertebrae
Sacrum
Safe sex
Sagittal
Saline
Salivary gland
Salmonella
Salmonellosis
Salpingo-oophorectomy
Salt
Saphenous vein
SAPHO syndrome
Sarcoidosis
Sarcoma
Sarcoma, metastatic
Sarcoma, soft tissue
SARS
Saturated fat
Scabies
Scabies, crusted
Scalded skin syndrome
Scalp ringworm
Scapula
Scarlatina
Scarlet fever
Scheuermann's disease
Schistosomiasis
Schizoaffective disorder
Schizophrenia
Schmorl's node
Sciatic nerve
Sciatica
Sclera
Scleritis
Sclero- (prefix)
Scleroderma
Sclerosing cholangitis
Sclerosis
Sclerosis, multiple
Scoliosis
Scoliosis, acquired
Scoliosis, congenital
Scoliosis, functional
Scoliosis, idiopathic
Scoliosis, structural
Screening, kidney disease
Scrotum
Scrub typhus
Scurvy
Sebaceous cyst
Sebaceous gland
Seborrhea
Seborrheic eczema
Seborrheic keratosis
Sebum
Seckel syndrome
Second-hand smoke
Secondary amenorrhea
Secretary's knee
Sedative
Sedimentation rate
Segmental arterial Doppler pressures
Seizure
Seizure disorders
Seizure, atonic
Seizure, complex partial
Seizure, febrile
Seizure, Jacksonian
Seizure, myoclonic
Seizure, partial
Seizure, petit mal
Seizure, tonic-clonic
Selective serotonin reuptake inhibitor
Selenium
Sella turcica
Seminal vesicles
Sensory
Sepsis
Sepsis, neonatal
Septate vagina
Septic
Septic arthritis
Septic bursitis
Septicemia
Septorhinoplasty
Septum
Seroconversion
Serositis
Serotonin
Serotonin reuptake inhibitor, selective
Serum
Serum glutamic oxaloacetic transaminase (SGOT)
Serum glutamic pyruvic transaminase (SGPT)
Sesamoid bone
Seventh cranial nerve paralysis
Severe acute respiratory syndrome
Sexual child abuse
Sexually transmitted disease
Sexually transmitted disease in men
Sexually transmitted diseases in women
SGOT
SGPT
Shigella
Shigellosis
Shin splint
Shingles
Shingles pain
Shock
Shock, cardiogenic
Shock, hypovolemic
Shock, septic
Short-term memory
Shotty
Shoulder
Shoulder blade
Shoulder bursitis
Shoulder joint
Shoulder, frozen
Shunt
Sicca syndrome
Sick sinus syndrome
Sickle cell anemia
Sickle cell disease
Sickle cell trait
Side effects
SIDS (sudden infant death syndrome)
Sigmoid
Sigmoidoscopy
Sign
Silent stroke
Silicosis
Singultus
Sinoatrial node
Sinus
Sinus arrhythmia
Sinus bradycardia
Sinus node
Sinus rhythm
Sinus tachycardia
Sinus, cavernous
Sinusitis
Situs inversus totalis
Six fingers or toes
Sixth disease
Sjogren syndrome
Sjogren-Larsson syndrome
Skeletal muscle
Skeleton
Skeleton, bones of the
Skin
Skin abscess
Skin biopsy
Skin Diseases, National Institute of...
Skin graft
Skin tag
Skull
SLE (systemic lupus erythematosus)
Sleep
Sleep apnea
Sleep apnea, central
Sleep apnea, obstructive
Sleep disorders
Sleep paralysis
Sliding hiatal hernia
Slipped disc
Sludge, biliary
Small intestine
Smallpox
Smear, Pap
Smell
Smooth muscle
Snellen's chart
Snellen's test type
Snoring
Social anxiety disorder
Sodium
Soft palate
Soft tissue sarcoma
Somatization
Somnolence
Sore, cold
Spasm
Spasmodic dysphonia
Spasticity
Speech disorders
Sperm
Spermatic cord
Spherocytosis, hereditary (HS)
Sphygmomanometer
Spider bites
Spina bifida
Spina bifida cystica
Spina bifida occulta
Spinal cord
Spinal stenosis
Spinal Tap
Spine
Spiral CAT scan
Spiral fracture
Spirochete
Spleen
Spleen, ruptured
Splenectomy
Splenomegaly
Spondylitis
Spondylolisthesis
Spondylolysis
Spondylosis
Sporadic
Sporotrichosis
Spots in front of the eyes
Sprain
Spur, heel
Sputum
Squamous cell carcinoma
Squamous cell carcinoma in situ
Squamous cells
Squamous intraepithelial lesion
SSRI
St. Anthony's fire
Staff of Aesculapius
Stage
Staging
Staph
Staph infection
Staphylococcal infection
Staphylococcal scalded skin syndrome
Staphylococcus
Staphylococcus, antibiotic-resistant
Stasis
Stasis dermatitis
Stasis ulcer
STAT
Statins
STD
Stein-Leventhal syndrome
Stem cell
Stenosis
Stenosis, aortic
Stent
Sterilization, surgical
Sternum
Steroid
Steroid abuse
Stevens-Johnson syndrome
Stiff baby syndrome
Still's disease
Stoma
Stomach
Stomach cancer
Stomach flu
Stomach paralysis
Stomatitis, Vincent
Stone, kidney
Stone, tonsil
Stool
Stool occult blood test
Storm supplies kit
Strabismus
Strain
Stratum corneum
Strep
Strep throat
Streptococcus
Streptococcus faecalis
Streptococcus pneumoniae (pneumococcus)
Streptococcus pyogenes
Streptococcus, group A
Streptococcus, group B
Stress
Stress exercise thallium scan
Stricture
Stroke
Stroke volume
Stroke, National Institute Neurological Disorders
Stroke, silent
Stroma
Subacute
Subarachnoid
Subarachnoid hemorrhage
Subcutaneous
Sublingual gland
Subluxation
Submandibular gland
Subscapularis muscle
Subtotal hysterectomy
Sulcus
Sulfa drug
Sulfonamides
Superficial
Superior
Superior vena cava syndrome
Supination
Supine
Supraspinatus muscle
Surgery
Suture
Sweat
Sweat gland tumor
Sweat test
Sweating
Sweating, gustatory
Sweats, night
Sydenham's chorea
Sympathetic nervous system
Symphysis pubis
Symptom
Synapse
Syncope
Syncope, micturition
Syncope, vasovagal
Syndactyly
Syndrome
Syndrome, Asperger
Syndrome, burning mouth
Syndrome, TAR
Syndrome, TMJ
Syndrome, Zollinger-Ellison
Synovial cyst, popliteal
Synovial fluid
Synovitis
Syphilis
Syringe
Syringoma
Systemic lupus erythematosus
Systole
Systolic

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Find a medical definition by using the A-Z listing (select a letter)

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Information in the MedTerms Medical Dictionary is provided for informational purposes only and is not a substitute for professional medical advice. You should not use this information for diagnosing or treating a medical or health condition. You should carefully read all product packaging. If you have or suspect you have a medical problem, promptly contact your professional healthcare provider.