10-letter words containing a, p, t, o
- gold-plate — to coat (base metal) with gold, especially by electroplating.
- goldplated — to coat (base metal) with gold, especially by electroplating.
- grapestone — the seed of a grape.
- graphitoid — resembling graphite
- grapholect — an established and standardized written language
- graptolite — any colonial animal of the extinct class Graptolithina, most common in the Ordovician and Silurian Periods, thought to be related to the pterobranchs.
- groupmates — Plural form of groupmate.
- grow apart — friends: become less intimate
- gymnoplast — a mass of protoplasm without an enclosing wall.
- halophytes — Plural form of halophyte.
- halophytic — Growing well under salty conditions.
- haphtaroth — Plural form of haphtarah.
- haplobiont — an organism, esp a plant, that exists in either the diploid form or the haploid form (but never alternates between these forms) during its life cycle
- haplotypes — Plural form of haplotype.
- happi coat — a Japanese lounging jacket with wide, loose sleeves and often an overlapping front closure usually tied with a sash.
- haptometer — a mechanical device for measuring the sense of touch.
- hartlepool — a seaport city in NE England.
- hectograph — a process for making copies of a letter, memorandum, etc., from a prepared gelatin surface to which the original writing has been transferred.
- hektograph — to copy with the hectograph.
- hemitropal — hemitropous
- hepatocyte — a cell of the main tissue of the liver; liver cell.
- hepatolith — A gallstone in the biliary duct of the liver.
- hepatology — (medicine) The study or treatment of the liver, gallbladder, and pancreas.
- heptachlor — a highly toxic, light-tan, waxy solid, C 10 H 5 Cl 7 , used as an insecticide: its manufacture and use are restricted in the U.S.
- heptachord — a musical scale of seven notes.
- heptagonal — having seven sides or angles.
- heptameron — A literary work whose action covers a period of seven days.
- heptapodic — having seven metrical feet
- heptathlon — an athletic contest for women comprising seven different track-and-field events and won by the contestant amassing the highest total score.
- heptatonic — (of a musical scale) comprising seven notes
- hierophant — (in ancient Greece) an official expounder of rites of worship and sacrifice.
- hippotamus — Obsolete spelling and common present-day misspelling of hippopotamus.
- hog peanut — a twining plant, Amphicarpaea bracteata, of the legume family, bearing pods that ripen in or on the ground.
- holophotal — reflecting and redirecting all or a large amount of the light from a source
- home plate — the base at which the batter stands and which a base runner must reach safely in order to score a run, typically a five-sided slab of whitened rubber set at ground level at the front corner of the diamond.
- homeopathy — the method of treating disease by drugs, given in minute doses, that would produce in a healthy person symptoms similar to those of the disease (opposed to allopathy).
- homoeopath — Alternative spelling of homeopath.
- homopteran — homopterous.
- hospitable — receiving or treating guests or strangers warmly and generously: a hospitable family.
- hospitably — receiving or treating guests or strangers warmly and generously: a hospitable family.
- hospitaler — a member of the religious and military order (Knights Hospitalers or Knights of St. John of Jerusalem) originating about the time of the first Crusade (1096–99) and taking its name from a hospital at Jerusalem.
- hospitalet — a city in NE Spain, near Barcelona.
- hot potato — Informal. a situation or issue that is difficult, unpleasant, or risky to deal with.
- houseplant — an ornamental plant that is grown indoors or adapts well to indoor culture.
- hydropathy — the curing of disease by the internal and external use of water.
- hyetograph — a map or chart showing the average rainfall for the localities represented.
- hyoplastra — the second foremost pair of plastral bones in a turtle
- hypaethron — a part of a building or court which is open to the sky
- hyperbaton — the use, especially for emphasis, of a word order other than the expected or usual one, as in “Bird thou never wert.”.
- hypertonia — increased rigidity, tension, and spasticity of the muscles.