18-letter words containing r, o, f, s, p, a
- reinforced plastic — plastic with fibrous matter, such as carbon fibre, embedded in it to confer additional strength
- salt of phosphorus — a colorless, odorless, crystalline, water-soluble solid, NaNH 4 HPO 4 ⋅4H 2 O, originally obtained from human urine: used as a blowpipe flux in testing metallic oxides.
- seafloor spreading — a process in which new ocean floor is created as molten material from the earth's mantle rises in margins between plates or ridges and spreads out.
- self-preoccupation — the state of being preoccupied.
- shatterproof glass — glass designed to resist shattering
- soda-lime feldspar — plagioclase.
- software backplane — (programming, tool) A CASE framework from Atherton.
- speak for yourself — If you say 'Speak for yourself' when someone has said something, you mean that what they have said is only their opinion or applies only to them.
- spirits of ammonia — a 10% solution of ammonia in alcohol
- spotted flycatcher — a European woodland songbird, Muscicapa striata, with a greyish-brown streaked plumage: family Muscicapidae (Old World flycatchers)
- take the wraps off — to reveal
- to play favourites — to display favouritism
- wild passionflower — the maypop, Passiflora incarnata.