What does cribellum mean?
Definitions for cribellum
cribel·lum
This dictionary definitions page includes all the possible meanings, example usage and translations of the word cribellum.
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Wiktionary
cribellumnoun
A spinning organ having many fine pores, situated in front of the spinners in some spiders.
Etymology: From cribellum, diminutive of cribrum ‘sieve’.
Webster Dictionary
Cribellumnoun
a peculiar perforated organ of certain spiders (Ciniflonidae), used for spinning a special kind of silk
Etymology: [L., a small sieve, dim. of cribrum sieve.]
Wikidata
Cribellum
The cribellum is a silk spinning organ found in certain spiders. Unlike normal spinnerets, the cribellum consists of one or more plates covered in thousands of tiny spigots. These spigots produce extremely fine fibers which are combed out by the spider's calamistrum, producing silk with a wooly texture. The fibers are so small in diameter that prey insects easily become entangled in them, without any glue needed. The spiders then bite them before they can escape. The cribellum is a functional homolog of the anterior median spinnerets of Mesothelae and Mygalomorphae, which do not have a cribellum. The presence or absence of a cribellum is used to classify araneomorph spiders into the cribellate and ecribellate type. The distinction can be used to study evolutionary relationships. However, in 1967 it was found out that there are many families with both cribellate and ecribellate members. It is today believed that the precursor of all Araneomorphae was cribellate, and that this function was lost in some araneomorph spiders secondarily. Many of these still retain a colulus, which is thought to be a reduced cribellum, and is of unknown function. However, some "ecribellate" spiders seem to have evolved independently, without cribellate precursors.
Chambers 20th Century Dictionary
Cribellum
kri-bel′um, n. an accessory spinning-organ of certain spiders—also Cribrell′um:—pl. Cribell′a.
Numerology
Chaldean Numerology
The numerical value of cribellum in Chaldean Numerology is: 2
Pythagorean Numerology
The numerical value of cribellum in Pythagorean Numerology is: 5
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"cribellum." Definitions.net. STANDS4 LLC, 2024. Web. 8 May 2024. <https://www.definitions.net/definition/cribellum>.
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