O·khotsk (?-k?tsk?, ?-KHôtsk?), Sea of An arm of the northwest Pacific Ocean west of the Kamchatka Peninsula and Kuril Islands. It is connected with the Sea of Japan by narrow straits.American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.Okhotsk (???k?tsk; Russian a??xtsk) n (Placename) Sea of Okhotsk part of the NW Pacific, surrounded by the Kamchatka Peninsula, the Kurile Islands, Sakhalin Island, and the E coast of Siberia. Area: 1 589 840 sq km (613 838 sq miles)Collins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014O?khotsk (o??k?tsk) n. Sea of, an arm of the N Pacific enclosed by the Kamchatka Peninsula, the Kurile Islands, Sakhalin, and the Russian Federation in Asia. Random House Kernerman Webster’s College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.