recon UK /ɹɪˈkɒn/US /ˈɹikɑn/noun 3verb 1forms 3 noun3 •(slang) reconnaissance.“Well, now that we're wrapped up, I gotta do recon for the big mish. Be back in two or three or ten days.” — 2026 •A hairstyle in which the sides of the head are shaven and the crest is cropped close. •The smallest genetic unit that is capable of undergoing recombination. verb1 •(US, slang) reconnoiter. formsreconned · reconning · recons