12-letter words containing i, r
- biohazardous — a pathogen, especially one used in or produced by biological research.
- bioinorganic — pertaining to the biological activity of metal complexes and nonmetal compounds based on elements other than carbon (contrasted with bioorganic).
- 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.
- bioturbation — the stirring of sediment by organisms
- biparentally — from a biparental point of view
- bipropellant — a rocket propellant consisting of two substances, usually a fuel and an oxidizer
- 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 colonel — a full colonel in the US Army
- bird fancier — a person who keeps, breeds, or sells birds
- bird nesting — the activity of searching for birds' nests as a hobby
- bird of prey — A bird of prey is a bird such as an eagle or a hawk that kills and eats other birds and animals.
- bird watcher — a person who identifies and observes birds in their natural habitat as a recreation.
- bird's mouth — a right-angled notch cut in the underside of a rafter for fitting over a longitudinal member, as a wall plate.
- bird-brained — silly; stupid
- bird-dogging — to follow, watch carefully, or investigate.
- bird-s--nest — nest (def 1).
- bird-spotter — a bird-watcher
- bird-watcher — A bird-watcher is a person whose hobby is watching and studying wild birds in their natural surroundings.
- birket karun — a lake in N Egypt. 25 miles (40 km) long; about 5 miles (8 km) wide; 90 sq. mi. (233 sq. km).
- birth defect — an inherited disease or condition that a baby is born with
- birth family — one's biological parents and siblings, as contrasted with one's adoptive family.
- birth father — a biological mother (birth mother) or biological father (birth father) a biological parent.
- 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 parent — a biological mother (birth mother) or biological father (birth father) a biological parent.
- birth trauma — an emotional shock caused by being born.
- birth weight — the amount a baby weighs when first born
- birthday boy — the boy or man whose birthday is being celebrated
- biscay green — a yellowish green.
- biscuit ware — unglazed earthenware
- bismarck sea — an arm of the Pacific Ocean north of New Britain and north-east of New Guinea
- bit of skirt — a girl or woman
- bitter aloes — a bitter purgative drug made from the leaves of several species of aloe
- bitter apple — colocynth
- bitter cress — any plant belonging to the genus Cardamine, of the mustard family, having usually pinnate leaves and clusters of white, pink, or purple flowers.
- bitter lakes — two lakes, the Great Bitter Lake and Little Bitter Lake in NE Egypt: part of the Suez Canal
- bitter lemon — a non-alcoholic, fizzy drink with a lemon flavour
- bitter melon — balsam pear.
- bitter-ender — a person who persists in a hopeless cause; one who will not give in
- black africa — Black Africa is the part of Africa to the south of the Sahara Desert.
- black friday — the day after the US Thanksgiving Day in late November, regarded as the start of the Christmas shopping season
- black heroin — a very potent and addictive form of heroin that is dark-colored.
- black liquor — (in making wood pulp for paper) the liquor that remains after digestion.
- black prince — Edward2 (Prince of Wales)
- black-figure — pertaining to or designating a style of vase painting developed in Greece in the 7th and 6th centuries b.c., chiefly characterized by silhouetted figures painted in black slip on a red clay body, details incised into the design, and a two-dimensional structure of form and space.
- blackbirding — a common European thrush, Turdus merula, the male of which is black with a yellow bill.
- blatherskite — a talkative silly person