Word of the Day
More about deltoidal
Deltoidal means “delta-shaped,” and river deltas are so named for their resemblance to the triangular Greek letter delta (Δ). Delta is adapted from a Phoenician letter, dalt or dālet, originally meaning “door,” related to Arabic dāl (د) and Hebrew dāleth (ד). Deltoidal was first recorded in English in the 1830s.
EXAMPLE OF DELTOIDAL USED IN A SENTENCE
The low tide revealed a deltoidal cluster of narrow channels at the river’s mouth.
tiramisu
noun
an Italian dessert with coffee and liquor-soaked layers of sponge cake alternating with mascarpone cheese and chocolate.
More about tiramisu
Tiramisu, from Italian tiramisù, is a literal pick-me-up; the term is based on Italian tira, “pick!”; mi, “me”; and su, “up.” Tira is the command form of tirare, “to pick, pull,” of uncertain origin, while su comes from Latin sūrsum, “upwards.” Tiramisu was first recorded in English in the early 1980s.
EXAMPLE OF TIRAMISU USED IN A SENTENCE
Sweet, savory slices of tiramisu were the most popular dessert at the Venetian restaurant.
turbidity
noun
the state or quality of being clouded or opaque, usually because of suspended matter or stirred-up sediment.
Why the Museum of Science chose turbidity
To find out, watch this video from science communicator Maynard Okereke, better known as the Hip Hop M.D.
Learn more at the Museum of Science.
More about turbidity
Turbidity comes from Medieval Latin turbiditās, which is based on Latin turbidus, meaning “confused, troubled, murky.” Turbidus comes from turba, “crowd, turmoil,” which is also the source of disturb, trouble, and turbulence. Turbidity was first recorded in English in the 1620s.
EXAMPLE OF TURBIDITY USED IN A SENTENCE
The turbidity of the muddy puddle only increased as a family of geese and goslings waddled through the water.
