1627 (indicated as 1626), Francis [Bacon], “III. Century.”, in Sylua Syluarum: Or A Naturall Historie. In Ten Centuries.[…], London:[…]William Rawley[…]; [p]rinted by J[ohn] H[aviland] for William Lee[…], →OCLC:
concurrent echo
1865, John Tyndall, “On Radiation”, in Fragments of Science for Unscientific People, pages 171–2:
Such are the changes which science recognizes in the wire itself, as concurrent with the visual changes taking place in the eye.
Acting in conjunction; agreeing in the same act or opinion; contributing to the same event or effect.
1612, John Davies, Discoverie of the True Causes why Ireland was never entirely subdued:
I join with these laws the personal presence of the king's son, as a concurrent cause of this reformation.
1738–1741, William Warburton, The Divine Legation of Moses[…], volumes (please specify |volume=I, II.1, or II.2), London:[…] Fletcher Gyles,[…], →OCLC:
the concurrent testimony of antiquity
Joint and equal in authority; taking cognizance of similar questions; operating on the same objects.
More precisely, a concurrent algorithm (or concurrent program) is the description of a set of sequential state machines that cooperate through a communication medium, e. g., a shared memory.
2018, Steve Klabnik, Carol Nichols, The Rust Programming Language, No Starch Press, →ISBN, page 342:
Many languages are dogmatic about the solutions they offer for handling concurrent problems. For example, Erlang has elegant functionality for message-passing concurrency but has only obscure ways to share state between threads.
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Menander […] had no concurrent in his time that came neere vnto him
One of the supernumerary days of the year over fifty-two complete weeks; so called because they concur with the solar cycle, the course of which they follow.
Part or all of this entry has been imported from the 1913 edition of Webster’s Dictionary, which is now free of copyright and hence in the public domain. The imported definitions may be significantly out of date, and any more recent senses may be completely missing. (See the entry for “concurrent”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.:G. & C. Merriam, 1913, →OCLC.)