“…That we found a positive relationship between definitions and student vocabulary growth was expected. Explicit definitions are a tried‐and‐true method of vocabulary instruction, and most interventions (with monolingual and bilingual populations) that target vocabulary and have shown positive effects include attention to explicit definitions (e.g., Apthorp et al., ; Baumann, Ware, & Edwards, ; Beck, Perfetti, & McKeown, ; Carlo et al., ; Dalton, Proctor, Uccelli, Mo, & Snow, ; McKeown, Beck, Omanson, & Perfetti, ; Nash & Snowling, ; NICHNational Institute of Child Health and Human Development, ). The present study provides further evidence of the value of providing definitions as part of vocabulary instruction.…”