Definition: aerobic rod-shaped spore-producing bacterium; often occurring in chainlike formations; found primarily in soil
Similar words: eubacteria, eubacterium, true bacteria
Definition: a large group of bacteria having rigid cell walls; motile types have flagella
Definition: the blood group whose red cells carry the B antigen
Similar words: blood group, blood type
Definition: human blood cells (usually just the red blood cells) that have the same antigens
Definition: the 2nd letter of the Roman alphabet
Similar words: alphabetic character, letter, letter of the alphabet
Definition: the conventional characters of the alphabet used to represent speech
Usage: his grandmother taught him his letters
Definition: (physics) a unit of nuclear cross section; the effective circular area that one particle presents to another as a target for an encounter
Similar words: area unit, square measure
Definition: a system of units used to measure areas
Definition: a logarithmic unit of sound intensity equal to 10 decibels
Similar words: sound unit
Definition: any acoustic unit of measurement
Synonyms: atomic number 5, B, boron
Definition: a trivalent metalloid element; occurs both in a hard black crystal and in the form of a yellow or brown powder
Similar words: element, chemical element
Definition: any of the more than 100 known substances (of which 92 occur naturally) that cannot be separated into simpler substances and that singly or in combination constitute all matter
Synonyms: vitamin B, vitamin B complex, B, B complex, B vitamin, B-complex vitamin
Definition: originally thought to be a single vitamin but now separated into several B vitamins
Similar words: water-soluble vitamin
Definition: any vitamin that is soluble in water