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v. in·ter·posed, in·ter·pos·ing, in·ter·pos·es
a. To insert or introduce between parts: The ice interposes a barrier between the harbor and the islands.
b. To place (oneself) between others or things.
2. To introduce or interject (a comment, for example) during discourse or a conversation. See Synonyms at introduce.
3. To exert (influence or authority) in order to interfere or intervene: interpose one's veto.
1. To come between things; assume an intervening position.
2. To come between the parties in a dispute; intervene.
3. To insert a remark, question, or argument.

[French, from Old French interposer, to intervene, alteration (influenced by poser, to put, place) of Latin interpōnere, to put between : inter-, inter- + pōnere, to put; see apo- in Indo-European roots.]

in′ter·pos′al n.
in′ter·pos′er n.
in′ter·po·si′tion (-pə-zĭsh′ən) n.
References in periodicals archive ?
The TWIC program is specifically intended to address the threats and vulnerabilities present in the transportation system and was designed to prevent unauthorized access to secure areas on airports, seaports, rail, pipeline, trucking, interposal, and mass transit facilities.
Noah Webster likewise defines interpose as "to place between, mediate" and lists separate entries for interposal, interposition, and interposer.
One new service cuts three days off the transport of interposal cargo from Mexico to markets in the eastern U.S., while a "Blue Streak" line rushes containers west to east.