12-letter words that end in is
- oesophagitis — Alternative spelling of esophagitis.
- ophthalmitis — ophthalmia.
- orthogenesis — Biology. Also called orthoselection. evolution of a species proceeding by continuous structural changes in a single lineage without presenting a branching pattern of descent. a theory that the evolution of a species in a continuous, nonbranching manner is due to a predetermined series of alterations intrinsic to the species and not subject to natural selection.
- orthotonesis — accentuation of a proclitic or enclitic
- osteogenesis — the formation of bone.
- osteoporosis — a disorder in which the bones become increasingly porous, brittle, and subject to fracture, owing to loss of calcium and other mineral components, sometimes resulting in pain, decreased height, and skeletal deformities: common in older persons, primarily postmenopausal women, but also associated with long-term steroid therapy and certain endocrine disorders.
- otosclerosis — formation of new bone about the stapes or cochlea, resulting in hearing loss.
- overanalysis — the separating of any material or abstract entity into its constituent elements (opposed to synthesis).
- overemphasis — excessive or undue emphasis.
- paedogenesis — sexual reproduction in an animal that retains its larval features
- palingenesis — rebirth; regeneration.
- panarthritis — arthritis in the entire joint
- pancreatitis — inflammation of the pancreas.
- paracentesis — puncture of the wall of a cavity to drain off fluid.
- paracystitis — inflammation of the connective tissue around the urinary bladder.
- paraphimosis — inability to retract the penis into the prepuce as a result of narrowing of the prepuce
- parapophysis — the process of a vertebra
- parasynapsis — the conjugation of chromosomes side by side; synapsis.
- pas de trois — a dance for three dancers.
- pathogenesis — the production and development of disease.
- pericarditis — inflammation of the pericardium.
- perichoresis — the relationship between or interlinking of the three Persons of the Trinity (Father, Son, and Holy Spirit)
- perineuritis — inflammation of the perineurium
- petrogenesis — the branch of petrology dealing with the origin and formation of rocks.
- phagocytosis — Physiology. the ingestion of a smaller cell or cell fragment, a microorganism, or foreign particles by means of the local infolding of a cell's membrane and the protrusion of its cytoplasm around the fold until the material has been surrounded and engulfed by closure of the membrane and formation of a vacuole: characteristic of amebas and some types of white blood cells.
- phalaenopsis — any of various epiphytic orchids of the genus Phalaenopsis, native to tropical Asia, having clusters of showy, variously colored flowers.
- photokinesis — movement occurring upon exposure to light.
- phylogenesis — the development or evolution of a particular group of organisms.
- phytogenesis — the origin and development of plants.
- pneumocystis — any protozoan of the genus Pneumocystis, esp P. carinii, which is a cause of pneumonia in people whose immune defences have been lowered by drugs or a disease
- podoconiosis — elephantiasis of the lower legs
- polyhedrosis — an often fatal disease of certain insect larvae or decapod crustaceans, caused by viruses containing DNA.
- polymyositis — a disorder characterized by the inflammation of multiple muscles
- polyneuritis — inflammation of several nerves at the same time; multiple neuritis.
- prediagnosis — Medicine/Medical. the process of determining by examination the nature and circumstances of a diseased condition. the decision reached from such an examination. Abbreviation: Dx.
- presbyacusis — an age-related, progressive loss of hearing in both ears
- proctoclysis — the slow, continuous introduction of a solution into the rectum to improve fluid intake.
- pseudocyesis — false pregnancy.
- psychognosis — the use of hypnosis to study mental phenomena
- ptyalectasis — spontaneous or surgical dilatation of a salivary duct.
- pyonephritis — suppurative inflammation of the kidney.
- rachischisis — A developmental birth defect in which the neural tube fails to close completely, leading to motor and sensory deficits, chronic infections, and disturbances in bladder function.
- radical axis — the line such that tangents drawn from any point of the line to two given circles are equal in length.
- renal pelvis — a small funnel-shaped cavity of the kidney into which urine is discharged before passing into the ureter
- rigor mortis — the stiffening of the body after death.
- royal tennis — court tennis.
- sacroiliitis — the inflammation of the sacroiliac joint
- salpiglossis — any solanaceous plant of the Chilean genus Salpiglossis, some species of which are cultivated for their bright funnel-shaped flowers
- sarcomatosis — the condition in which a sarcoma has become disseminated throughout the body.
- sarie marais — a popular Afrikaans song