15-letter words containing h, o, t, d, r
- dehydrogenation — to remove hydrogen from (a compound).
- delsarte method — a theory or system devised by François Delsarte for improving musical and dramatic expression through the mastery of various bodily attitudes and gestures.
- dendrochemistry — (chemistry) the science, related to dendrochronology, that uses the analysis of trace minerals in tree rings to study air pollution in past times.
- dephosphorylate — to remove a phosphate group from (an organic compound)
- derhotacization — A distortion in (or an Inability to pronounce) the sound of letter R, causing the R to be omitted as a consonant or changing /\u025d/ or /\u025a/ to /\u025c/,/\u0259/, or another vowel if a vocalic.
- dermatoglyphics — the lines forming a skin pattern, esp on the palms of the hands and soles of the feet
- dermatographism — a condition in which touching or lightly scratching the skin causes raised, reddish marks.
- dermatophytosis — a fungal infection of the skin, esp the feet
- diaheliotropism — the tendency among plants to respond to the light of the sun by orienting their leaves perpendicular to the sun's rays, such that the upper surface of the leaves receives maximum light
- diaphototropism — growth of a plant or plant part in a direction transverse to that of the light
- diastrophically — in a diastrophic fashion
- dichloromethane — a noxious colourless liquid widely used as a solvent, e.g. in paint strippers. Formula: CH2Cl2
- dichroic filter — an optical colour filter operating on the principle of wave interference between closely spaced reflecting surfaces, rather than by colour absorption
- dionysius thrax — c100 b.c, Greek grammarian.
- dishcloth gourd — loofah (def 1).
- distributorship — a franchise held by a distributor.
- dithiocarbamate — any salt or ester of dithiocarbamic acid, commonly used as fungicides
- do the dirty on — to behave meanly or unkindly towards
- doctoral thesis — a thesis written as part of a doctorate
- dolphin striker — a short vertical strut between the bowsprit and a rope or cable (martingale) from the end of the jib boom to the stem or bows, used for maintaining tension and preventing upward movement of the jib boom
- dongola leather — a leather similar to kid, made from goatskin, sheepskin, or calfskin.
- dorsibranchiate — having branchiae or gills along the back
- dougherty wagon — a horse- or mule-drawn passenger wagon having doors on the side, transverse seats, and canvas sides that can be rolled down.
- downheartedness — The characteristic of being downhearted; sadness.
- draughtproofing — Present participle of draughtproof.
- drinking trough — a narrow open container in which water for animals is put
- droste-hulshoff — Annette Elisabeth Freiin von [ah-net-uh ey-lee-zah-bet frahy-in fuh n] /ɑˈnɛt ə eɪˈli zɑˌbɛt ˈfraɪ ɪn fən/ (Show IPA), 1797–1848, German poet.
- drying-up cloth — a tea towel
- durchkomponiert — having a different tune for each section rather than having repeated melodies
- dystrophication — the process by which a body of water becomes dystrophic.
- echinodermatous — belonging or pertaining to the echinoderms.
- editor in chief — the policy-making executive or principal editor of a publishing house, publication, etc.
- edriophthalmian — edriophthalmous
- edriophthalmous — (of certain crustaceans) having stalkless eyes
- eleutherodactyl — (of a bird) having the hind toe free
- ergatandromorph — an ant with the characteristics of both worker and male
- fairy godfather — a kindly sponsor or guardian; godfather.
- fairy godmother — a kindly sponsor or guardian; godmother.
- fighter command — a former unit of the Royal Air Force dedicated to the use of fighter aircraft, esp against enemy bombers and their escorts during WWII
- flight recorder — an electronic device aboard an aircraft that automatically records some aspects of the aircraft's performance in flight.
- forecastle head — the extreme fore part of a forecastle superstructure.
- foresightedness — care or provision for the future; provident care; prudence.
- foster daughter — a girl raised like one's own daughter, though not such by birth or adoption.
- founding father — The founding father of an institution, organization, or idea is the person who sets it up or who first develops it.
- frederick north — Christopher, pen name of John Wilson.
- freedom fighter — a fighter for freedom, especially a person who battles against established forces of tyranny and dictatorship.
- french togoland — a former United Nations Trust Territory in W Africa, administered by France (1946–60), now the independent republic of Togo
- get the drop on — a small quantity of liquid that falls or is produced in a more or less spherical mass; a liquid globule.
- go by the board — If something goes by the board, it is rejected or ignored, or is no longer possible.
- gödel's theorem — either of two theorems published by the mathematician Kurt Gödel in 1931 that prove all mathematical systems are incomplete in that their truth or consistency can only be proved using a system of a higher order