Etymology
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antimatter (n.)

also anti-matter, 1898, from anti- "opposite" + matter (n.).

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materiality (n.)

1520s, "that which is the matter of something, material substance," from Modern Latin materialitas, from materialis "of or belonging to matter," from Latin materia "matter, stuff" (see matter (n.)). From 1560s as "state or quality of being material;" 1640s as "quality of being important to matters at hand, essentiality."

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material (adj.)

mid-14c., "real, ordinary; earthly, drawn from the material world" (contrasted with spiritual, mental, supernatural), a term in scholastic philosophy and theology, from Old French material, materiel (14c.) and directly from Late Latin materialis (adj.) "of or belonging to matter," from Latin materia "matter, stuff, wood, timber" (see matter (n.)).

From late 14c. as "made of matter, having material existence; material, physical, substantial." From late 15c. as "important, relevant, necessary, pertaining to the matter or subject;" in the law of evidence, "of legal significance to the cause" (1580s).

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rottenness (n.)

"state of being decayed or putrid, process of natural decomposition of animal or vegetable matter," mid-14c., from rotten + -ness. From c. 1400 as "decayed or decaying matter."

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hylo- 

word-forming element meaning "wood, forest," also "matter," from Greek hylos "a wood, a forest, woodland; wood, firewood, timber; stuff, material," used by Aristotle for "matter" in the philosophical sense; a word of unknown origin.

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matters (n.)
"events, affairs of a particular sort," 1560s, from plural of matter (n.).
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spew (n.)
"vomited matter," c. 1600, from spew (v.).
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clog (v.)

late 14c., "hinder, impede the movement of," originally by fastening a block of wood to something, from clog (n.). Meaning "choke up with extraneous matter" is 1670s; intransitive sense "become choked up with extraneous matter" is from 1755. Related: Clogged; clogging.

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cyanine (n.)

"blue coloring matter of certain flowers," 1855; see cyan- + -ine (2).

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immaterial (adj.)
c. 1400, "spiritual, incorporeal, not consisting of matter," from Medieval Latin immaterialis "not consisting of matter, spiritual," from assimilated form of in- "not, opposite of" (see in- (1)) + Late Latin materialis "of or belonging to matter" (see material (adj.)). Sense of "unimportant, of no consequence" is first recorded 1690s from material (adj.) in its meaning "important" (16c.). Related: Immaterially (late 14c.); immateriality.
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