13-letter words containing p, o, s, t, a, b
- subperiosteal — the normal investment of bone, consisting of a dense, fibrous outer layer, to which muscles attach, and a more delicate, inner layer capable of forming bone.
- subpopulation — the total number of persons inhabiting a country, city, or any district or area.
- subtropically — in the subtropics
- tablespoonful — the amount a tablespoon can hold.
- triploblastic — having three primary germ layers, as the embryos of vertebrates.
- unpostponable — to put off to a later time; defer: He has postponed his departure until tomorrow.
- unsupportable — capable of being supported; endurable; maintainable.