A curve with polar equation , where a is a constant.(noun)
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Use "lituus" in a sentence
"This sort of staff is crooked at one end, and is called lituus; they make use of it in quartering out the regions of the heavens when engaged in divination from the flight of birds; Romulus, who was himself a great diviner, made use of it."
"Three hundred years after its last sounding, a long-lost instrument called the lituus -- one of Johann Sebastian Bach's go-to horns -- is back from the dead."
"He wore the red-and-purple-striped toga, and carried a staff, the lituus, topped by a curlicue."