15-letter words that end in sis
- osteochondrosis — a disease of bone and cartilage growth centers in children that begins as a necrosis and is followed by regeneration or renewed calcification.
- parthenogenesis — development of an egg without fertilization.
- phlebosclerosis — sclerosis, or hardening, of the walls of veins.
- phloem necrosis — a disease of the American elm caused by a mycoplasmalike organism, characterized by yellowing and necrosis of the foliage and yellowish-brown discoloration of the phloem.
- pseudoarthrosis — a joint formed by fibrous tissue bridging the gap between the two fragments of bone of an old fracture that have not united
- pseudoparalysis — the inability to move a part of the body owing to factors, as pain, other than those causing actual paralysis.
- psychodiagnosis — a psychological examination using psychodiagnostic techniques.
- psychosynthesis — a theoretical effort to reconcile components of the unconscious, including dreams, with the rest of the personality.
- pubic symphysis — the fixed joint at the front of the pelvic girdle where the halves of the pubis meet.
- pycnodysostosis — a disorder characterized by fragile bones
- range paralysis — Marek's disease.
- reverse osmosis — the process in which pure water is produced by forcing waste or saline water through a semipermeable membrane.
- schistosomiasis — an infection caused by parasitic flukes of the genus Schistosoma, occurring commonly in eastern Asia and in tropical regions and transmitted to humans through feces-contaminated fresh water or snails: symptoms commonly include pain, anemia, and malfunction of the infected organ.
- spermatogenesis — the origin and development of spermatozoa.
- steroidogenesis — the formation of steroids, as by the adrenal cortex, testes, and ovaries.
- tensor analysis — the branch of mathematics dealing with the calculus of tensors, especially the study of properties that are unaffected by a change of coordinate system.
- theriomorphosis — transformation into an animal form, often associated with mythological characters
- toxic psychosis — a psychosis resulting from the toxic effect of chemicals, drugs, or certain intrinsic metabolic states.
- trypanosomiasis — any infection caused by a trypanosome.
- vector analysis — the branch of calculus that deals with vectors and processes involving vectors.
- vermouth cassis — a mixed drink made with dry vermouth, crème de cassis, soda or mineral water, and cracked ice.
- voice synthesis — the artificial production of the human voice
- x-ray diagnosis — diagnosis by means of an X-ray