12-letter words containing r, m
- beth midrash — a place where Jews gather to study the Talmud and other religious writings; a small synagogue.
- beurre manie — butterpaste.
- bewilderment — Bewilderment is the feeling of being bewildered.
- bhakti-marga — any of the three ways to salvation, which are those of devotion to certain gods (bhakti-marga) of study (jnana-marga) and of actions (karma-marga)
- bicameralism — having two branches, chambers, or houses, as a legislative body.
- bilateralism — the practice of being bilateral
- bimorph cell — a piezoelectric transducer consisting of two crystals cemented together, used in microphones, headphones, loudspeakers, etc. to convert vibrations into a voltage output or to convert a signal voltage into vibrations that can produce audible sounds
- bio-organism — a dangerous fast-proliferating organism that could be used as the basis of a biological weapon
- bioastronomy — the branch of biology which deals with the study or the discovery of life forms on other planets or in space
- biochemistry — Biochemistry is the study of the chemical processes that happen in living things.
- biometrician — a person who is knowledgeable about biometry
- biomolecular — relating to a biomolecule
- biorhythmics — the study of biorhythms
- biotelemetry — the monitoring of biological functions in humans or animals by means of a miniature transmitter that sends data to a distant point to be read by electronic instruments
- bioterrorism — Bioterrorism is terrorism that involves the use of biological weapons.
- birch family — the plant family Betulaceae, characterized by deciduous trees having simple serrate leaves, male flowers in drooping catkins, female flowers in short clusters, and one-seeded nuts, and including the alder, birch, hazel, and hornbeam.
- bird's mouth — a right-angled notch cut in the underside of a rafter for fitting over a longitudinal member, as a wall plate.
- birth family — one's biological parents and siblings, as contrasted with one's adoptive family.
- birth mother — the woman who gives birth to a child, regardless of whether she is the genetic mother or subsequently brings up the child
- birth trauma — an emotional shock caused by being born.
- bismarck sea — an arm of the Pacific Ocean north of New Britain and north-east of New Guinea
- bitter lemon — a non-alcoholic, fizzy drink with a lemon flavour
- bitter melon — balsam pear.
- blabbermouth — a person who talks too much or indiscreetly
- black market — If something is bought or sold on the black market, it is bought or sold illegally.
- black stream — a warm ocean current in the Pacific, flowing N along the E coast of Taiwan, NE along the E coast of Japan, and continuing in an easterly direction into the open Pacific.
- black-market — to black-marketeer.
- bladder worm — an encysted saclike larva of the tapeworm. The main types are cysticercus, hydatid, and coenurus
- bliss carman — (William) Bliss, 1861–1929, Canadian poet and journalist in the U.S.
- blue swimmer — an edible bluish Australian swimming crab, Portunus pelagicus
- board member — a member of board of directors
- bog rosemary — any of several species (genus Andromeda) of evergreen shrubs of the heath family, native to cold bogs of North America and Europe, with pink flowers and narrow leaves
- boilermaking — metal-working in heavy industry; plating or welding
- bomb factory — a site or building in which terrorists illicitly and secretly create bombs
- bomb shelter — a shelter, usually underground, in which people take refuge from bomb attacks
- bomber pilot — the pilot of a bomber
- bonus number — (in the National Lottery) a number announced after the normal six numbers which influences the amount of prize money paid
- booking form — a form used to book a holiday, accommodation, etc
- boom-or-bust — boom-and-bust.
- boomer state — Oklahoma
- boomeranging — a bent or curved piece of tough wood used by the Australian Aborigines as a throwing club, one form of which can be thrown so as to return to the thrower.
- booster pump — A booster pump is a pump which is used where pressure is low and needs to be increased.
- bosom friend — an intimate friend
- bottom break — a branch coming from the bottom of a plant stem, usually formed by pinching and disbudding.
- bottom grass — any grass that grows on bottoms or lowlands.
- bottom quark — a type of quark with a mass of c. 4.7 to 5.3 GeV/c2, a negative charge that is 1⁄3 the charge of an electron, zero charm, and zero strangeness
- bottom round — a cut of beef taken from outside the round, which is below the rump and above the upper leg.
- bottom-liner — a person, as an executive, accountant, or stockholder, who puts the net profits of a business ahead of all other considerations.
- bottomfeeder — (networking) An RSS aggregator.
- boxgrove man — a type of primitive man, probably Homo heidelbergensis, and probably dating from the Middle Palaeolithic period some 500 000 years ago; remains were found at Boxgrove in West Sussex in 1993 and 1995