12-letter words containing si
- grand siècle — the 17th century in French art and literature, esp the classical period of Louis XIV
- guide fossil — index fossil.
- gulf of siam — an arm of the South China Sea between the Malay Peninsula and Indochina
- haematemesis — Alternative spelling of hematemesis.
- haematolysis — Haemolysis.
- haemogenesis — Haematopoiesis.
- haemosiderin — Alternative form of hemosiderin.
- hair-raising — terrifying or horrifying: We had a hair-raising brush with death.
- hairdressing — the act or process of cutting, combing out, doing up, or styling hair.
- hallucinosis — a mental state characterized by repeated hallucinations.
- harpsichords — Plural form of harpsichord.
- harquebusier — a soldier armed with a harquebus.
- hell-raising — behaviour which causes trouble
- hemapheresis — apheresis.
- hemarthrosis — (pathology) bleeding in the joints.
- hemiparasite — A plant that obtains or may obtain part of its food by parasitism, e.g., mistletoe, which also photosynthesizes.
- hemiscotosis — hemianopsia.
- hemodialysis — dialysis of the blood, especially with an artificial kidney, for the removal of waste products.
- hemopoiesis' — hematopoiesis.
- hesitatingly — In a hesitating manner.
- hessian boot — a knee-high tasseled boot, fashionable in England in the early 19th century.
- heterauxesis — an unequal or asymmetrical growth of cells, parts of plants or animals
- heteroclisis — (grammar) The presence of two or more classes of inflection in the inflectional paradigm of a noun, verb etc.
- heteroousian — a person who believes the Father and the Son to be unlike in substance or essence; an Arian (opposed to Homoousian).
- heteroplasia — the replacement of normal cells by abnormal cells, as in cancer.
- hexasiloxane — (organic chemistry) Any siloxane having six -Si-O- groups.
- hidropoiesis — the production of sweat.
- high density — floppy disk
- high-density — having a high concentration: entering a high-density market with a new product; high-density lipoprotein.
- high-tension — subjected to or capable of operating under relatively high voltage: high-tension wire.
- higher apsis — See under apsis.
- histogenesis — the origin and development of tissues.
- hit the silk — the soft, lustrous fiber obtained as a filament from the cocoon of the silkworm.
- hiv positive — (of a person) diagnosed by a test as being infected with HIV.
- hiv-positive — (of a person) diagnosed by a test as being infected with HIV.
- hoisin sauce — a thick, sweet, spicy condiment containing soybeans, sugar, garlic, and chili peppers, used in cooking or as an accompaniment to meat, fish, or poultry, especially Peking duck.
- home mission — a religious mission operating within the country or territories of the supporting church.
- homesickness — sad or depressed from a longing for home or family while away from them for a long time.
- homoeostasis — Alternative spelling of homeostasis.
- homogenising — Present participle of homogenise.
- homozygosity — having identical pairs of genes for any given pair of hereditary characteristics.
- housing list — a list of people waiting to obtain council houses
- hybrid basis — A hybrid basis is a system of accounting that combines some of the features of cost basis with some of the features of accrual basis.
- hydrokinesis — (science fiction): The psychic ability to manipulate or control water.
- hypaesthesia — an abnormally weak sense of pain, heat, cold, or touch.
- hypapophysis — (anatomy) A process, or other element, of a vertebra developed from the ventral side of the centrum.
- hyperalgesia — an exaggerated sense of pain (opposed to hypalgesia).
- hyperalgesic — Of or pertaining to hyperalgesia.
- hypergenesis — an origin, creation, or beginning.
- hyperidrosis — excessive or abnormal sweating