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INCLUSIONS - 3 dictionary results

in⋅clu⋅sion

[in-kloo-zhuhn]
–noun
1. the act of including.
2. the state of being included.
3. something that is included.
4. Biology. a body suspended in the cytoplasm, as a granule.
5. Mineralogy. a solid body or a body of gas or liquid enclosed within the mass of a mineral.
6. Petrography. xenolith.
7. Logic, Mathematics. the relationship between two sets when the second is a subset of the first.

Origin:
1590–1600; 1945–50 for def. 7; < L inclūsiōn- (s. of inclūsiō) a shutting in, equiv. to inclūs(us) (see incluse ) + -iōn- -ion

xen⋅o⋅lith

[zen-l-ith]
–noun Petrography.
a rock fragment foreign to the igneous rock in which it is embedded.
Also called inclusion.


Origin:
1900–05; xeno- + -lith


xen⋅o⋅lith⋅ic, adjective
in·clu·sion   (ĭn-klōō'zhən)   
n.  
  1. The act of including or the state of being included.
  2. Something included.
  3. Geology A solid, liquid, or gaseous foreign body enclosed in a mineral or rock.
  4. Biology A nonliving mass, such as a droplet of fat, in the cytoplasm of a cell.
  5. Computer Science A logical operation that assumes the second statement of a pair is true if the first one is true.

[Latin inclūsiō, inclūsiōn-, from inclūsus, past participle of inclūdere, to enclose; see include.]
in·clu'sion·ar'y (-zhə-něr'ē) adj.
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