English Etymology From pro- + head. Noun prohead (plural proheads) A procapsid. 2015 December 4, “DNA Packaging Specificity of Bacteriophage N15 with an Excursion into the Genetics of a Cohesive End Mismatch”, in PLOS ONE, →DOI:The concatemers are processed into mature chromosomes with cohesive ends, and packaged into prohead shells, during virion assembly.Wikiwand - on Seamless Wikipedia browsing. On steroids.Remove ads