palaechinoid
/palɪˈkʌɪnɔɪd/ /peɪlɪˈkʌɪnɔɪd/ /palˈɛkɪnɔɪd/(also palaeechinoid) Palaeontology
noun
Originally: an extinct echinoid (sea urchin) belonging to the former subclass Palaechinoidea, comprising all or most Palaeozoic echinoids, typically having more than two series of interambulacral plates. Now usually: a member of a more restricted group of Palaeozoic echinoids (sometimes classified as an order Palaechinoida) including the genus Palaechinus.
Origin
Mid 19th century; earliest use found in James Dana (1813–1895), geologist, zoologist, and teacher. From scientific Latin Palaechinoidea, subclass name from palaeo- + Echinoidea, class name, with coalescence of the vowels. With later use compare scientific Latin Palechinus, Palaechinus, Palaeechinus, genus name.
- when
- when all is said and done
- whence
- whencesoever
- whene'er
- whenever
- when in Rome (do as the Romans do)
- when-issued
- when it comes to ——
- when one's ship comes in (or home)
- when (or while) the cat's away, the mice will play
- when push comes to shove
- whensoe'er
- whensoever
- when the balloon goes up
- when the blind lead the blind, both shall fall into a ditch
- when the chips are down
- when the going gets tough, the tough get going
- when the shit hits the fan
- when the spirit moves someone
- when the whips are cracking
- whenua
- when ——'s at home
- where
- whereabouts