Etymology
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intern (v.2)
"to act or serve as as a (medical) intern," 1933, from intern (n.). Related: Interned; interning.
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intern (v.1)

1866, "to confine within set limits," from French interner "send to the interior, confine," from interne "inner, internal" (14c.), from Latin internus "within, internal" (see internal; also compare intern (n.)).

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intern (n.)
"one working under supervision as part of professional training," originally "assistant resident physician, doctor in training in a hospital," 1879, American English, from French interne "assistant doctor," noun use of interne "internal," from Latin internus "within, inward" (see internal). Extended to other professions (originally teaching) from 1963 in reference to one under training and acquiring practical experience.
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internee (n.)
"one who is interned," from intern (v.1) + -ee.
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internment (n.)
1840, "confinement within a place," from intern (v.1) + -ment. Compare French internement. Internment camp is attested from 1916.
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internationalism (n.)
1851, from international + -ism. Related: Internationalist.
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internalize (v.)
1856, American English, from internal + -ize. Related: Internalized; internalizing.
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internationalise (v.)
chiefly British English spelling of internalize (q.v.). For spelling, see -ize. Related: Internationalisation.
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