Medical Abbreviations

Osteoarthritis is a common degenerative joint disease characterized by cartilage breakdown and joint inflammation, leading to pain and reduced mobility. It typically affects knees, hips, hands, and spine, especially with aging. The term combines medical roots for bone and joint wear, and is used across clinical and everyday contexts by patients and professionals alike.

Osteochondritis is a medical condition characterized by inflammation of the bone and cartilage, typically at joints, which can lead to pain and restricted movement. It encompasses degenerative changes driven by disrupted blood supply or repetitive stress. The term is used mainly in clinical contexts to describe localized osteochondral lesions.

Osteogenesis is the biological process of bone formation, from the differentiation of osteoblasts to mineralization of the bone matrix. It is a key mechanism in growth, healing, and skeletal development, often discussed in medical and anatomical contexts. The term combines root elements meaning bone and origin, reflecting how bone tissue is produced and organized over time.

Osteomyelitis is a medical term describing an infection of bone. It typically starts in bone or adjacent tissue and can spread, causing inflammation and pain. The word is used in clinical, academic, and research contexts to discuss diagnosis, treatment, and prognosis.

Osteoporosis is a medical condition characterized by reduced bone density and strength, increasing fracture risk, especially in older adults. It results from an imbalance between bone resorption and formation, often progressing silently until a fracture occurs. The term combines Greek roots for bone and porous, conveying the idea of porous bones.

Osteoradionecrosis is a serious jawbone and facial tissue condition caused by radiation therapy, leading to bone death and impaired healing. It results from radiation-induced damage to blood vessels and bone, often presenting weeks to months after treatment. It is a complex, expert-level medical term used in oncology and maxillofacial contexts.

Otorhinolaryngology is the medical specialty focused on the ears, nose, and throat, including the diagnosis and treatment of disorders of the head and neck. It covers otology, rhinology, and laryngology, together addressing hearing, balance, upper airway, swallowing, and related cranial nerve functions. The term is often shortened to ENT in clinical practice.

Pancreatitis is a medical condition characterized by inflammation of the pancreas. It can be acute or chronic and manifests with abdominal pain, nausea, and digestive issues. The term combines pancreatic and -itis (inflammation), reflecting its pathological nature and location.

Phacoemulsification is a modern cataract-removal technique that uses ultrasonic energy to break up the cloudy lens, which is then aspirated from the eye. The term combines Greek roots for eye and grinding, reflecting its method of emulsifying lens material for removal. It’s a technical term frequently used in ophthalmology and medical discussions about intraocular surgery.

Phlebitis is an inflammation of a vein, usually in the leg. It can cause redness, swelling, warmth, and pain along the affected vein, sometimes related to thrombophlebitis when a clot forms. Medical evaluation is important, and treatment may include compression, anti-inflammatory measures, or anticoagulants depending on cause and severity.

Phlebology is the medical specialty that focuses on veins, especially venous diseases and conditions, including diagnosis, treatment, and prevention. It encompasses venous insufficiency, varicose veins, thrombosis, and related vascular disorders. The field integrates aspects of anatomy, physiology, and minimally invasive techniques to improve venous circulation and patient outcomes.

Phlebotomy is the medical procedure of drawing blood, typically for diagnostic testing, transfusion preparation, or donation. The term describes the practice performed by clinicians or phlebotomists who collect venous blood samples using appropriate venipuncture techniques. It encompasses pre-procedure patient preparation, collection, labeling, and specimen handling to ensure accurate results.

A long noun referring to a lung disease caused by inhaling very fine silica dust. The term is primarily used as a technical, rarely-used word, often cited as one of the longest words in English. It denotes a specific, severe pneumoconiosis resulting from silica exposure.

Pneumoperitoneum is the medical condition or presence of free air within the peritoneal cavity, typically arising from visceral perforation or surgical insufflation. It is a specialized, clinical term used in radiology and surgery, indicating a gas-filled abdomen. The word is primarily encountered in expert medical discussions and case reports.

Pneumothorax is a medical condition where air or gas accumulates in the pleural space between the lung and chest wall, causing the lung to collapse partially or completely. The term combines Greek roots with medical suffixes, and is used in clinical and radiology discussions to describe a potentially life‑threatening but treatable event.

Polyarthralgia refers to pain in multiple joints, typically without a single focal inflammatory diagnosis. It is a clinical descriptor used when several joints ache simultaneously, which may accompany various rheumatic or infectious illnesses. The term is medical, technical, and encountered most often in rheumatology notes and case histories.

Polycythemia is a medical condition characterized by an abnormally high concentration of red blood cells in the bloodstream. It can be primary or secondary and may lead to thickened blood and impaired circulation. The term is used in clinical contexts and requires careful pronunciation due to its multisyllabic structure and Greek/Latin roots.

Polyposis refers to the condition of having multiple polyps, usually in the mucous membranes of the digestive tract or nasal passages. It denotes a pathological proliferation of polyp tissue and can be associated with hereditary syndromes or sporadic occurrences. In medical contexts, it often implies a risk of malignancy or complications stemming from polyp burden.