| BATHOCHROMES | • BATHOCHROME n. a shift to a longer wavelength in the absorption spectrum of a compound. | 
| BATHYSPHERES | • bathyspheres n. Plural of bathysphere. • BATHYSPHERE n. a submersible observation chamber.
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| BIORHYTHMICS | • biorhythmics n. The study of biorhythms. • BIORHYTHMICS n. the study of biorhythms.
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| BREECHCLOTHS | • breechcloths n. Plural of breechcloth. • breech-cloths n. Plural of breech-cloth.
 • BREECHCLOTH n. a loincloth.
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| BROTHERHOODS | • brotherhoods n. Plural of brotherhood. • BROTHERHOOD n. the state of being brothers.
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| HAIRBREADTHS | • hairbreadths n. Plural of hairbreadth. • HAIRBREADTH n. the breadth of a hair; a minute distance, also HAIRSBREADTH.
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| HAIRSBREADTH | • hairsbreadth n. A very short distance or a very small amount (as is the width of a hair). • hair's␣breadth n. A very small amount or distance.
 • HAIRSBREADTH n. the breadth of a hair; a minute distance, also HAIRBREADTH.
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| HANDBREADTHS | • handbreadths n. Plural of handbreadth. • HANDBREADTH n. the breadth of a hand, also HANDSBREADTH.
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| HANDSBREADTH | • handsbreadth n. A small distance. • HANDSBREADTH n. the breadth of a hand, also HANDBREADTH.
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| HEATHBERRIES | • HEATHBERRY n. any of various plants that have berrylike fruits and grow on heaths, such as the bilberry and crowberry. | 
| SUBTHRESHOLD | • subthreshold adj. Describing a stimulus that is not strong enough to elicit a response. • subthreshold adj. Below a threshold.
 • subthreshold adj. (Medicine) subsyndromal.
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| THARBOROUGHS | • THARBOROUGH n. (Shakespeare) a mispronunciation of thirdborough, also FARBOROUGH. | 
| THOROUGHBASS | • thoroughbass n. (Music) Synonym of figured bass. • THOROUGHBASS n. esp. in baroque music, a bass part underlying a piece.
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| TOOTHBRUSHED | • toothbrushed v. Simple past tense and past participle of toothbrush. | 
| TOOTHBRUSHES | • toothbrushes n. Plural of toothbrush. • TOOTHBRUSH n. a brush for cleaning the teeth.
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