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.
(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, and toil.
(lowercase) any age or period of degeneracy or wickedness.
(classical myth) the last and worst age in the history of the world
1590s, originally from Greek and Roman mythology, the last and worst age of the world; the archaeological sense of “period in which humans used iron tools and weapons” is from 1879.
The period in cultural development succeeding the Bronze Age in Asia, Europe, and Africa, characterized by the introduction of iron metallurgy. In southeastern Europe and the Middle East the beginning of the Iron Age is generally dated to around 1200 BCE, with later dates for other parts of Europe and the other continents. Although not as hard or durable as bronze, iron is a more abundant resource, and the Iron Age saw a rapid expansion of metalworking wherever the technology was introduced. See Note at Three Age system.
The period of history, succeeding the Bronze Age, when people first learned to extract iron from ore and use it to forge tools, weapons, and other objects. The first organized production of iron objects developed in southwestern Asia shortly after 2000 b.c.
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.
[ahy-ern-bound] /ˈaɪ ərnˈbaʊnd/ adjective 1. bound with . 2. rock-bound; rugged. 3. hard; rigid; unyielding. /ˈaɪənˌbaʊnd/ adjective 1. bound with iron 2. unyielding; inflexible 3. (of a coast) rocky; rugged