15-letter words that end in der
- red-back spider — a venomous spider, Latrodectus hasselti, of Australia and New Zealand, related to the black widow spider and having a bright red stripe on the back.
- religious order — monks: monastery
- repeat offender — A repeat offender is someone who commits the same sort of crime more than once.
- scorpion spider — whipscorpion.
- seidlitz powder — a laxative consisting of two powders, tartaric acid and a mixture of sodium bicarbonate and Rochelle salt (sodium potassium tartrate)
- sneezing powder — a powder used to make people sneeze as a practical joke
- speech disorder — an inability to produce normal speech
- speller-divider — a reference book that lists words in alphabetical order to show spelling and syllabification.
- squadron leader — air-force officer
- start of header — (character) (SOH) mnemonic for ASCII 1.
- statutory order — a statute that applies further legislation to an existing act
- stop-loss order — an order from a customer to a broker to sell a security if the market price drops below a designated level.
- summer flounder — a flounder, Paralichthys dentatus, inhabiting shallow waters from Cape Cod to South Carolina, valued as food.
- trapdoor spider — any of various, often large, spiders (esp. family Ctenizidae) that dig a burrow and cover the entrance with a hinged lid like a trapdoor
- urinary bladder — a distensible, muscular and membranous sac, in which the urine is retained until it is discharged from the body.
- voltage divider — a resistor or series of resistors connected to a voltage source and used to provide voltages that are fractions of that of the source.
- vreni schneider — Vreni [vren-ee] /ˈvrɛn i/ (Show IPA), born 1964, Swiss Alpine ski racer.
- winter flounder — any of various popular food flatfishes, as Parophrys vetulus of the Pacific (English sole) and Pseudopleuronectes americanus of the Atlantic (winter flounder or blackback flounder)
- young pretender — a member of the royal family that ruled in Scotland from 1371 to 1714 and in England from 1603 to 1714.