15-letter words containing o, r, t, h, d, n
- active hydrogen — hydrogen in the form of single atoms, rather than molecules, which makes it extremely reactive.
- alder buckthorn — a Eurasian rhamnaceous shrub, Frangula alnus, with small greenish flowers and black berry-like fruits
- alpha radiation — alpha particles emitted from a radioactive isotope
- answer the door — When you answer the door, you go and open the door because a visitor has knocked on it or rung the bell.
- antiaphrodisiac — something that represses sexual desire
- around the bend — to force (an object, especially a long or thin one) from a straight form into a curved or angular one, or from a curved or angular form into some different form: to bend an iron rod into a hoop.
- around the horn — (thrown) from third base to second to first in trying for a double play
- before the wind — with the wind coming from astern
- boustrophedonic — of or relating to lines written in opposite directions
- bring to a head — to bring or be brought to a crisis
- catchment board — a public body concerned with the conservation and organization of water supply from a catchment area
- chondroskeleton — the cartilaginous part of the skeleton of vertebrates
- chorda tendinea — any of the tendons extending from the papillary muscles to the atrioventricular valves and preventing the valves from moving into the atria during ventricular contraction.
- cinematographed — a motion-picture projector.
- connected graph — (mathematics) A graph such that there is a path between any pair of nodes (via zero or more other nodes). Thus if we start from any node and visit all nodes connected to it by a single edge, then all nodes connected to any of them, and so on, then we will eventually have visited every node in the connected graph.
- cooktown orchid — a purple Australian orchid, Dendrobium bigibbum, found in Queensland, of which it is the floral emblem
- corn-root aphid — an aphid, Anuraphis maidiradicis, that lives as a symbiont in colonies of cornfield ants and feeds on the roots of corn: an agricultural pest.
- costochondritis — (medicine) A benign inflammation of the costal cartilage, causing pain between the ribs.
- counterweighted — Simple past tense and past participle of counterweight.
- decision theory — the study of strategies for decision-making under conditions of uncertainty in such a way as to maximize the expected utility
- dehydrogenating — Present participle of dehydrogenate.
- dehydrogenation — to remove hydrogen from (a compound).
- dendrochemistry — (chemistry) the science, related to dendrochronology, that uses the analysis of trace minerals in tree rings to study air pollution in past times.
- 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.
- dichloromethane — a noxious colourless liquid widely used as a solvent, e.g. in paint strippers. Formula: CH2Cl2
- dionysius thrax — c100 b.c, Greek grammarian.
- do the dirty on — to behave meanly or unkindly towards
- 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
- 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
- ergatandromorph — an ant with the characteristics of both worker and male
- 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
- foresightedness — care or provision for the future; provident care; prudence.
- 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.
- 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.
- golden starfish — an award given to a bathing beach that meets EU standards of cleanliness
- goodheartedness — The quality of being goodhearted.
- grandparenthood — The state of being a grandparent.
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