reinforcer

/ˌriːɪnˈfɔːrsər/
noun
  1. Something that strengthens or encourages a behavior or response.
    • The teacher used stickers as a reinforcer for completing homework on time.
    • In animal training, a treat is a common reinforcer for performing a trick.
    • Praise can be a powerful reinforcer for a child learning to read.
  2. A material or device used to make something stronger or more durable.
    • Fiberglass is a common reinforcer in plastic products.
    • The engineer added a carbon fiber reinforcer to the bridge design.
    • Steel bars are used as a reinforcer in concrete foundations.
What does "reinforcer" mean? | whatsthatwordmean | whatsthatwordmean