midstream adverb 2noun 1forms 1phrases 1 adverb2 •in midstreamsome of them got caught midstream by the tide •(figurative) in midstream, abruptlythe most difficult thing in a fast game of rugby is to change course midstream noun1 •The middle of a stream or river. formsmidstreams Phrases with midstream change horses in midstreamTo change one's plan or approach when an effort is already underway or at another inopportune time.
