12-letter words containing i, r
- authorizable — able to be authorized
- auto-erotism — the arousal and satisfaction of sexual excitement within or by oneself, as by masturbation.
- autocratical — Autocratic.
- autocritique — the examination of factors guiding one's thoughts, beliefs and actions; self-criticism
- autodiallers — Plural form of autodialler.
- autographing — Present participle of autograph.
- autoinjector — A medical device designed to deliver a single dose of a particular, typically life-saving, drug.
- automorphism — the practice of seeing others as having the same characteristics as oneself
- autoreactive — (immunology, medicine) Acting against the organism by which it was produced.
- autorhythmic — That generates its own rhythm.
- autorickshaw — (in India) a light three-wheeled vehicle driven by a motorcycle engine
- autorotation — the continuous rotation of a body in an airflow, such as that of the rotor blades of a helicopter in an unpowered descent
- avariciously — characterized by avarice; greedy; covetous.
- avascularity — the condition of having few blood vessels or of being without blood vessels
- average life — the average time that an unstable particle or nucleus survives before it decays.
- aversiveness — the condition of being characterized by aversion
- aviculturist — A person who keeps and rears (breeds) birds.
- avuncularity — the condition of being an uncle
- award-winner — person or thing that wins an award
- awe-stricken — filled with awe.
- axel heiberg — the largest island belonging to the Sverdrup group in the Canadian Northwest Territories. 15,779 sq. mi. (40,868 sq. km).
- axillary bud — a bud that is borne at the axil of a leaf and is capable of developing into a branch shoot or flower cluster.
- axisymmetric — being symmetrical around an axis
- azathioprine — a synthetic drug that suppresses the normal immune responses of the body and is administered orally during and after organ transplantation and also in certain types of autoimmune disease. Formula: C9H7N7O2S
- azithromycin — A macrolide antibiotic derived from erythromycin.
- b'nai b'rith — a Jewish fraternal organization founded in New York in 1843, having moral, philanthropic, social, educational, and political aims
- b-s particle — a neutral meson with a mass 10,507 times that of the electron and a mean lifetime of approximately 1.6 X 10 -12 seconds.
- babe-in-arms — a young baby that has to be carried
- baby carrier — a kind of sling or rucksack used to carry small babies either on one's chest or one's back
- baby monitor — a device that transmits sounds made by a baby to another room
- bachelorship — the state of being a bachelor; bachelorhood
- backbreaking — demanding great effort; exhausting
- backcrossing — (genetics) The crossing of a hybrid with one of its parents or an individual genetically similar to its parent.
- backstarting — a marketing technique in publishing, whereby new customers are sent back issues of magazines or journals as part of their subscription
- backswimmers — Plural form of backswimmer.
- backtracking — to return over the same course or route.
- bacon-slicer — a machine for cutting bacon into slices
- bacteria bed — a layer of sand or gravel used to expose sewage effluent, in its final stages, to air and the action of microorganisms
- bactericidal — any substance capable of killing bacteria.
- bactericides — Plural form of bactericide.
- bacteriocide — Alternative form of bactericide.
- bacteriology — Bacteriology is the science and the study of bacteria.
- bacteriostat — any substance that arrests the growth or reproduction of bacteria but does not kill them
- bad hair day — People sometimes say they are having a bad hair day when they do not feel very happy or relaxed, especially because their hair does not look good.
- báinín skirt — a skirt made of this material
- bairnsfather — Bruce. 1888–1959, British cartoonist, born in India: best known for his cartoons of the war in the trenches during World War I
- baker island — an island in the central Pacific near the equator, belonging to the U.S. 1 sq. mi. (2.6 sq. km).
- baldwin park — city in SW Calif.: suburb of Los Angeles: pop. 76,000
- ball bearing — Ball bearings are small metal balls placed between the moving parts of a machine to make the parts move smoothly.
- ball of fire — a very lively person