13-letter words containing b, t, r
- horseshoe bat — any of numerous large-eared Old World insectivorous bats, mostly of the genus Rhinolophus, with a fleshy growth around the nostrils, used in echolocation: family Rhinolophidae
- hot cross bun — a bun with a cross of frosting on it, eaten chiefly during Lent.
- hot-water bag — a bag, usually of rubber, for holding hot water to apply warmth to some part of the body, as the feet.
- hubristically — in a presumptuous or arrogant manner
- hunt saboteur — A hunt saboteur is someone who tries to stop a hunt from taking place or being successful because they believe it is cruel to the animal being hunted.
- hunter's robe — pothos.
- hybrid system — a way of working, organizing, or doing something that is composed of elements of two separate systems
- hybridisation — Alternative form of hybridization.
- hybridization — to cause to produce hybrids; cross.
- hydroboration — (chemistry) the production or organoboranes by the addition of diborane to unsaturated organic compounds.
- hypermobility — An excess amount of elasticity in a bodily joint.
- hypnobirthing — the use of hypnotic techniques during labour by an expectant mother to reduce the pain and emotional stress of delivery
- hypobaropathy — a condition produced in high altitudes, caused by diminished air pressure and reduced oxygen intake; mountain sickness.
- illustratable — Capable of being illustrated.
- immunosorbent — an insoluble surface to which a specific antibody is attached for the purpose of removing the corresponding antigen from a solution or suspension.
- imperceptible — very slight, gradual, or subtle: the imperceptible slope of the road.
- imperceptibly — very slight, gradual, or subtle: the imperceptible slope of the road.
- imperfectible — that cannot be perfected.
- imperturbable — incapable of being upset or agitated; not easily excited; calm: imperturbable composure.
- imperturbably — incapable of being upset or agitated; not easily excited; calm: imperturbable composure.
- impracticable — not practicable; incapable of being put into practice with the available means: an impracticable plan.
- impracticably — In an impracticable way.
- impredictable — (nonstandard) unpredictable.
- improbability — the quality or condition of being improbable; unlikelihood.
- improvability — to bring into a more desirable or excellent condition: He took vitamins to improve his health.
- imputrescible — not liable to decomposition or putrefaction; incorruptible: a tanning process to make skins imputrescible.
- inbetweener's — a person or thing that is between two extremes, two contrasting conditions, etc.: yeses, noes, and in-betweens; a tournament for professional, amateur, and in-between.
- inboard motor — a boat's motor that is situated within the hull
- inconstruable — unable to be construed
- inconvertible — (of paper money) not capable of being converted into specie.
- inconvertibly — In an inconvertible manner.
- incorruptable — Misspelling of incorruptible.
- incorruptible — not corruptible: incorruptible integrity.
- incorruptibly — In an incorruptible manner.
- incredibility — so extraordinary as to seem impossible: incredible speed.
- indisturbance — Freedom from disturbance; calmness; repose.
- indolebutyric — as in indolebutyric acid, a synthetic plant growth regulator
- inelaborately — not in an elaborate fashion, in a way lacking elaboration
- inexorability — unyielding; unalterable: inexorable truth; inexorable justice.
- inobservation — lack of observation
- inobtrusively — in an unobtrusive manner
- insubordinate — not submitting to authority; disobedient: an insubordinate soldier.
- insupportable — not endurable; unbearable; insufferable: insupportable pain.
- insupportably — In an insupportable manner.
- integrability — capable of being integrated, as a mathematical function or differential equation.
- interbreeding — Present participle of interbreed.
- interceptable — Able to be intercepted.
- intercerebral — (anatomy) Between the two cerebral hemispheres.
- interfaceable — Capable of being interfaced.
- intermembrane — situated between two membranes