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adjectivethe ordinal number of one hundred fifty in counting order
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Definition that contains 150th
- sesquicentennial the 150th anniversary (or the celebration of it)
- hawaii standard time standard time in the 10th time zone west of Greenwich, reckoned at the 150th meridian west; used in Hawaii and the western Aleutian Islands
- hawaii time standard time in the 10th time zone west of Greenwich, reckoned at the 150th meridian west; used in Hawaii and the western Aleutian Islands