[il-uh-strey-shuh n] /ˌɪl əˈstreɪ ʃən/
something that , as a picture in a book or magazine.
a comparison or an example intended for explanation or corroboration.
the act or process of illuminating.
the act of clarifying or explaining; elucidation.
Archaic. illustriousness; distinction.
pictorial matter used to explain or decorate a text
an example or demonstration: an illustration of his ability
the act of illustrating or the state of being illustrated
c.1400, “a shining;” early 15c., “a manifestation;” mid-15c., “a spiritual illumination,” from Old French illustration “apparition, appearance,” and directly from Latin illustrationem (nominative illustratio) “vivid representation” (in writing), literally “an enlightening,” from past participle stem of illustrare “light up, make light, illuminate;” figuratively “make clear, disclose, explain; adorn, render distinguished,” from assimilated form of in- “in” (see in- (2)) + lustrare “make bright, illuminate,” related to lucere “shine,” lux “light” (see light (n.)). Mental sense of “act of making clear in the mind” is from 1580s. Meaning “an illustrative picture” is from 1816.
[il-uh-strey-shuh-nl] /ˌɪl əˈstreɪ ʃə nl/ adjective 1. of, relating to, or characteristic of : illustrational art. 2. used for purposes of ; serving to illustrate; illustrative.
[ih-luhs-truh-tiv, il-uh-strey-tiv] /ɪˈlʌs trə tɪv, ˈɪl əˌstreɪ tɪv/ adjective 1. serving to ; explanatory: illustrative examples. adj. 1640s, from illustrate + -ive.
[il-uh-strey-ter, ih-luhs-trey-ter] /ˈɪl əˌstreɪ tər, ɪˈlʌs treɪ tər/ noun 1. an artist who makes : an illustrator of children’s books. 2. a person or thing that . n. 1590s, “one who enlightens,” from illustrate + Latinate agent-noun suffix -or. Meaning “one who draws pictures” is 1680s.
[ih-luhs-tree-uh s] /ɪˈlʌs tri əs/ adjective 1. highly distinguished; renowned; famous: an illustrious leader. 2. glorious, as deeds or works: many illustrious achievements. 3. Obsolete. luminous; bright. /ɪˈlʌstrɪəs/ adjective 1. of great renown; famous and distinguished 2. glorious or great: illustrious deeds 3. (obsolete) shining adj. 1560s, from Latin illustris “lighted, bright, brilliant;” figuratively “distinguished, […]