retroreflection
/ˌrɛtrəʊrɪˈflɛkʃn/Optics
noun
The reflection of light in such a way that it travels along the path it took prior to reflection, but in the reverse direction.
Origin
1940s. From retro- + reflection. Compare earlier retroflexion, and also retroreflective, retroreflector.
- contradictory
- contradistinction
- contradistinguish
- contrafactive
- contrafactual
- contraflow
- contrail
- contraindicate
- contraindication
- contralateral
- contralto
- contra mundum
- contranym
- contraposition
- contrapositive
- contrapposto
- contra proferentem
- contraption
- contrapuntal
- contrapuntally
- contrapuntist
- contrarian
- contrarianism
- contrariety
- contrarily