Posturepedic
/ˌpɒstʃəˈpiːdɪk/(also Posturepaedic) originally US
noun
A trademark for: a type of spring mattress designed to give orthopaedic support to the relaxed body.
adjective
Designed to support the body in a beneficial position. Also (loosely, usually with lower-case initial) with reference to any mattress of a similar design.
Origin
1940s; earliest use found in The Daily Northwestern. From posture + -paedic.