(informal) A period of time in the life of dogs, defined such that the average life expectancy of a dog in dog years is numerically equivalent to the average life expectancy of a human. A 4- and ...

Misspelling of betweenness.

(inorganic chemistry) An element from group 13 of the periodic table which includes boron, aluminium, gallium, indium, and thallium.

Alternative spelling of straight-faced