From Longman Dictionary of Contemporary Englishseize on/upon something phrasal verbINTERESTEDto suddenly become very interested in an idea, excuse, what someone says etc His every remark is seized upon by the press. → seize→ See Verb table
Examples from the Corpus
seize on/upon • Phillips seized on a long ball and found himself with only Manninger to beat.• Some of the students seized on a particular word, like sad, to mi5construe the whole tone of the review.• But it was snuffed out just before half-time when hooker Duane Mann seized on a Rob Nolan error to score.• Mattie seized upon her words, turning them to her own advantage.• If he hadn't provoked the argument then he had certainly seized on it with relish.• Still other companies seize on one of the cure-alls currently being widely touted and hope that it will do the trick.• Anti-abortion groups have seized upon the few that have shown an adverse effect, not the many that have not.• Why should the Stephens family have seized on this as an event worthy of becoming a story? 