Definition of Pappus in English:

Pappus

proper noun

  • (fl.c.300–350 ad), Greek mathematician; known as Pappus of Alexandria. Little is known of his life, but his Collection of six books (another two are missing) is the principal source of knowledge of the mathematics of his predecessors.

Pronunciation:

Pappus

/ˈpapəs/

Definition of pappus in English:

pappus

noun

Botany
  • The tuft of hairs on each seed of thistles, dandelions, and similar plants, which assists dispersal by the wind.

    • ‘The pauciflorous capitulum consists of outer female florets with short ligules, inner hermaphrodite florets without a pappus, and five outer involucral bracts, up to 2 cm long, possessing long-stalked glandular hairs.’
    • ‘The achenes are terete, narrowed at the base, 5 x 0 • 7 mm, ribbed and black, with a basal tuft of hairs and a pappus consisting of five ovate, petal-like scales.’
    • ‘The achenes produced by each capitulum are similar, possess a pappus of bristles that causes them to move upwind and a well-developed elaisome (oil-containing appendage).’
    • ‘Coode and Richardson pointed out a relationship between Centranthus and Valeriana because both genera share a plumose pappus.’
    clump, bunch, knot, cluster, tussock, tuffet
    View synonyms

Origin

Early 18th century: via Latin from Greek pappos.

Pronunciation:

pappus

/ˈpapəs/