thermosphere

the region of the earth’s atmosphere lying beyond the mesosphere, at an altitude of 80 km to more than 100 km from the earth, in which the temperature increases with altitude.

cuckoopint

a common European species of arum, Arum maculatum; wake-robin.

lectern

a reading desk, especially that in a church from which the lessons are read.

ophicleide

a musical wind instrument, a development of the old wooden serpent, consisting of a conical metal tube bent double.

unilingual

knowing, using, concerning, or in only one language.