Definition of madreporite in English:

madreporite

noun maˈdrɛpərʌɪtˌmadrɪˈpɔːrʌɪtˌmadrəˈpôrīt

Zoology

A perforated plate by which the entry of seawater into the vascular system of an echinoderm is controlled.
〔动〕（棘皮动物控制海水进入其脉管系统的）筛板，穿孔板
Example sentencesExamples
- The madreporite was not visible until the juveniles were about 10 mm diameter and all the arms were of similar size.
- The water vascular system generally has one madreporite.
- Virtually all extraxial body wall in asteroids is of the perforate variety, since it includes body openings such as papular pores, hydropores in the madreporite, gonopores, and the anus.
- The water vascular system of the sea stars open up at the madreporite, a perforated opening in the central part of the animal.
- One of the genital plates serves as the sieve plate, or madreporite, for the water vascular system.

Origin

Early 19th century: from madrepore (see Madreporaria) + -ite¹.

Definition of madreporite in US English:

madreporite

nounˌmadrəˈpôrīt

Zoology

A perforated plate by which the entry of seawater into the vascular system of an echinoderm is controlled.
〔动〕（棘皮动物控制海水进入其脉管系统的）筛板，穿孔板
Example sentencesExamples
- One of the genital plates serves as the sieve plate, or madreporite, for the water vascular system.
- The water vascular system generally has one madreporite.
- Virtually all extraxial body wall in asteroids is of the perforate variety, since it includes body openings such as papular pores, hydropores in the madreporite, gonopores, and the anus.
- The water vascular system of the sea stars open up at the madreporite, a perforated opening in the central part of the animal.
- The madreporite was not visible until the juveniles were about 10 mm diameter and all the arms were of similar size.

Origin

Early 19th century: from madrepore (see Madreporaria) + -ite.

词汇	madreporite
释义	Definition of madreporite in English: madreporite noun maˈdrɛpərʌɪtˌmadrɪˈpɔːrʌɪtˌmadrəˈpôrīt Zoology A perforated plate by which the entry of seawater into the vascular system of an echinoderm is controlled. 〔动〕（棘皮动物控制海水进入其脉管系统的）筛板，穿孔板 Example sentencesExamples The madreporite was not visible until the juveniles were about 10 mm diameter and all the arms were of similar size. The water vascular system generally has one madreporite. Virtually all extraxial body wall in asteroids is of the perforate variety, since it includes body openings such as papular pores, hydropores in the madreporite, gonopores, and the anus. The water vascular system of the sea stars open up at the madreporite, a perforated opening in the central part of the animal. One of the genital plates serves as the sieve plate, or madreporite, for the water vascular system. Origin Early 19th century: from madrepore (see Madreporaria) + -ite¹. Definition of madreporite in US English: madreporite nounˌmadrəˈpôrīt Zoology A perforated plate by which the entry of seawater into the vascular system of an echinoderm is controlled. 〔动〕（棘皮动物控制海水进入其脉管系统的）筛板，穿孔板 Example sentencesExamples One of the genital plates serves as the sieve plate, or madreporite, for the water vascular system. The water vascular system generally has one madreporite. Virtually all extraxial body wall in asteroids is of the perforate variety, since it includes body openings such as papular pores, hydropores in the madreporite, gonopores, and the anus. The water vascular system of the sea stars open up at the madreporite, a perforated opening in the central part of the animal. The madreporite was not visible until the juveniles were about 10 mm diameter and all the arms were of similar size. Origin Early 19th century: from madrepore (see Madreporaria) + -ite.
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