To ostracize is to deliberately exclude or leave someone out.
(verb)An example of ostracize is when you don't invite one person in the class to a party that everyone else is going to.
See ostracize in Webster's New World College Dictionary
transitive verb ostracized, ostracizing
Origin: Gr ostrakizein, to exile by votes written on tiles or potsherds < ostrakon, a shell, potsherd, akin to osteon, bone: see ossify
See ostracize in American Heritage Dictionary 4
transitive verb os·tra·cized, os·tra·ciz·ing, os·tra·ciz·es
Origin:
Origin: Greek ostrakizein
Origin: , from ostrakon, shell, potsherd (from the potsherds used as ballots in voting for ostracism); see ost- in Indo-European roots
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