16-letter words containing a, p, c, h, e, d
- psychic distance — the degree of emotional detachment maintained toward a person, group of people, event, etc.
- pyruvic aldehyde — a yellow, liquid compound, C 3 H 4 O 2 , containing both an aldehyde and a ketone group, usually obtained in a polymeric form: used chiefly in organic synthesis.
- radio microphone — a microphone incorporating a radio transmitter so that the user can move around freely
- secondary phloem — phloem derived from the cambium during secondary growth.
- special handling — (in the U.S. Postal Service) the handling of third- and fourth-class mail as first-class upon the payment of a fee.
- spreader-ditcher — a machine for shaping and cleaning roadbeds and ditches and for freeing tracks of ice and snow by plowing and digging.
- stannic sulphide — an insoluble solid compound of tin usually existing as golden crystals or as a yellowish-brown powder: used as a pigment. Formula: SnS2
- the long paddock — a stockroute or roadside area offering feed to sheep and cattle in dry times
- the-card-players — a painting (1892) by Paul Cézanne.
- thermoacidophile — any organism, especially a type of archaebacterium, that thrives in strongly acidic environments at high temperatures.
- twofold purchase — a purchase using a double standing block and a double running block so as to give a mechanical advantage of four or five, neglecting friction, depending on whether the hauling is on the standing block or the running block.
- underpitch vault — a construction having a central vault intersected by vaults of lower pitch.