soft·bound 
(sôftbound′, sŏft-)
(sôftbound′, sŏft-)adj.
Not bound between hard covers: softbound books.
- photonics
- photonuclear
- photo-offset
- photo op
- photo opportunity
- photoperiod
- photoperiodic
- photoperiodism
- photophilic
- photophilous
- photophobia
- photophobic
- photophore
- photophosphorylation
- photopia
- photopic
- photoplay
- photopositive
- photoproduct
- photoreaction
- photorealism
- photorealist
- photorealistic
- photoreception
- photoreceptive