through ■ prep. and adv. 1. Moving in one side and out of the other side of (an opening, channel, or location). → so as to make a hole or opening in (a physical object). → moving around or from one side to the other with (a crowd or group). → expressing the position or location of something beyond (an opening or an obstacle). → so as to be perceived from the other side of (an intervening obstacle). → expressing the position or location of something beyond or at the far end of (an opening or an obstacle). → expressing the extent of turning from one orientation to another. 2. continuing in time towards completion of (a process or period). → so as to complete (a particular stage or trial) successfully. → from beginning to end of. 3. so as to inspect all or part of (a collection, inventory, or publication). 4. North American, up to and including (a particular point in an ordered sequence): they will be in London from March 24 through May 7. 5. by means of (a process or intermediate stage). → by means of (an intermediary or agent): seeking justice through the proper channels. 6. So as to be connected by telephone. ■ adj. 1. (with reference to public transport) continuing or valid to the final destination. → (of traffic) passing from one side of a place to another in the course of a longer journey. → (of a road) open at both ends, allowing free passage from one end to the other. 2. (of a room) running the whole length of a building. 3. (of a team or competitor) having successfully passed to the next stage of a competition. 4. informal having no prospect of any future relationship, dealings, or success.
Origin: Old English thruh (preposition and adverb), of Germanic origin; related to Dutch door and German durch. The spelling change to thr- appears circa 1300, becoming standard from Caxton onwards.
Pronunciation: θru
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