zoarium

American  

[zoh-air-ee-uhm] / zoʊˈɛər i əm /

noun

Biology.

• zoaria,
  plural
• zoariums
  plural

1. a collection of distinct, individual zooids that make up a compound or colonial organism.

2. the supporting structure for a polyp colony; polyzoarium.

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Other Word Forms

Derived Forms

• zoarial
  adjective

Inflected Forms

Nouns

• zoaria
  plural
• zoariums
  plural

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Etymology

Origin of zoarium

First recorded in 1880–85; zo- ( def. ) + -arium ( def. )

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Example Sentences

See Examples For:

zoarium zoaria

The majority of the zoœcia in each zoarium are more or less distinctly flattened, but some of them are often modified to form "vibracula" and "avicularia."

From Freshwater Sponges, Hydroids & Polyzoa by Nelson Annandale

The zoarium often covers a considerable area on flat surfaces and is sometimes found crowded together on the stems of plants.

From Freshwater Sponges, Hydroids & Polyzoa by Nelson Annandale

The zoarium consists of a circular or oval mass of no great size.

From Freshwater Sponges, Hydroids & Polyzoa by Nelson Annandale

In a few freshwater species belonging to the genera Cristatella, Lophopus, Lophopodella and Pectinatella, the whole zoarium has the power of progression.

From Freshwater Sponges, Hydroids & Polyzoa by Nelson Annandale

Division II, Cristatellina, nov.—Ectocyst absent except at the base of the zoarium which is modified to form a creeping "sole"; polypides embedded in a common synœcium of reticulate structure.

From Freshwater Sponges, Hydroids & Polyzoa by Nelson Annandale

Luxuriant or closely compressed zoaria of P. diffusa often bear a superficial resemblance to those of P. emarginata, but the resemblance disappears if they are carefully dissected out.

From Freshwater Sponges, Hydroids & Polyzoa by Nelson Annandale

The zoaria of this subfamily are never dendritic but form gelatinous masses which, except in Australella, are cushion-shaped or sack-like.

From Freshwater Sponges, Hydroids & Polyzoa by Nelson Annandale

The zoaria in these colonies measured about 1 cm. in diameter and already contained many polypides each.

From Freshwater Sponges, Hydroids & Polyzoa by Nelson Annandale

This resemblance, however, disappears in the case of zoœcia that bear terminal buds, for no such buds are borne by B. caudata; and the yellowish tint of the zoaria of V. bengalensis is characteristic.

From Freshwater Sponges, Hydroids & Polyzoa by Nelson Annandale

At Igatpuri statoblasts are being produced in considerable numbers at the end of November, but many young zoaria can be found in which none have as yet been formed.

From Freshwater Sponges, Hydroids & Polyzoa by Nelson Annandale

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