|a chattering or flighty, light-headed person.|
|an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle.|
|1.||to make or become different in some respect; change|
|2.||informal chiefly (US) (tr) castrate a euphemistic word for spay|
|[C14: from Old French alterer, from Medieval Latin alterāre to change, from Latin alter other]|
Alanine aminotransferase; an enzyme in serum and body tissues that catalyzes the transfer of amino acid groups from l-alanine to 2-ketoglutarate or the reverse, thus allowing nitrogen to be excreted or incorporated into other compounds.