An iron isotope that is a beta emitter with a half-life of 45.1 days and is used as a tracer in the study of iron metabolism.
noun 1. the period in the history of humankind, following the Stone Age and the Bronze Age, marked by the use of implements and weapons made of iron. 2. (lowercase) Classical Mythology. the present age, following the bronze age; the last and worst of the four ages of the human race, characterized by danger, corruption, […]
noun, Chemistry. 1. . noun, Chemistry. 1. a green, crystalline, water-soluble, synthetically produced powder, (NH 4) 3 Fe(C 2 O 4) 3 ⋅3H 2 O, used chiefly in the manufacture of blueprint paper.
[ahy-ern-bahrk] /ˈaɪ ərnˌbɑrk/ noun 1. any of the various Australian eucalyptuses having a hard, solid . /ˈaɪənˌbɑːk/ noun 1. any of several Australian eucalyptus trees that have hard rough bark
noun 1. any of the class of blue pigments having a high tinting strength and ranging in shade and in coloring properties from reddish blue to jet blue: used chiefly in the manufacture of paints and printing inks.