reinforcement

• re-enforcement, reenforcement, reënforcement

From reinforce +‎ -ment.

• IPA^(key): /ˌɹiːɪnˈfɔː(ɹ)smənt/

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reinforcement (countable and uncountable, plural reinforcements)

1. (uncountable) The act, process, or state of reinforcing or being reinforced.
2. (countable) A thing that reinforces.

   There's a website that can be a good learning reinforcement.

3. (in the plural) Additional troops or materiel sent to support a military action.

   Send in the reinforcements!

4. (uncountable, behavioral psychology) The process whereby a behavior with desirable consequences comes to be repeated.
5. A small round white sticker placed around a punched hole in a piece of paper to prevent the binder's rings from tearing through the paper.

• punishment
• operant conditioning
• classical conditioning