noun
a subatomic particle with spherical symmetry and positive, negative, or neutral charge.
Pion is either a contraction of pi meson or formed from pi and the suffix -on, which indicates subatomic particles. The Greek letter pi (Ancient Greek î or î) is a borrowing from the Phoenician alphabet, and its name comes from a Semitic root meaning “mouth.” Pion was first recorded in English in the early 1950s.
EXAMPLE OF PION USED IN A SENTENCE
The pion blinked into and out of existence within mere billionths of a second.
noun
either of two triggerfishes of Indo-Pacific coral reefs.
Humuhumunukunukuapuaa is from Hawaiian ܳܳܳ-ԳܰܲԳܰ--ܲ‘a. The humuhumu element means “triggerfish,” while nukunuku translates as “short, blunt” and “small snout,” means “like,” and ܲ’a means “pig.” Both humuhumu and nukunuku are reduplicated forms, same as the English terms bye-bye, chitchat, and itsy-bitsy. Humuhumunukunukuapuaa was first recorded in English in the mid-1860s.
EXAMPLE OF HUMUHUMUNUKUNUKUAPUAA USED IN A SENTENCE
A school of brightly colored humuhumunukunukuapuaa drifted idly by the reef.
noun
a device, as a skylight or reflector, for diverting light into a building.
Abat-jour is from French, in which abat is a form of abattre, “to beat down,” ultimately from Latin battuere, “to beat.” Battuere is the source of numerous fighting-related words in English, including battleԻ debate, and French jour, “day, daylight,” is the source of journal and journey. Abat-jour was first recorded in English in the 1820s.
EXAMPLE OF ABAT-JOUR USED IN A SENTENCE
Through an abat-jour in the ceiling, the sun cast a square of light onto the floor.