proloculusn.

Brit.

/prəʊˈlɒkjᵿləs/, U.S.

/proʊˈlɑkjələs/

Inflections: Plural proloculi, prolocula.

Forms: 1900s– proloculum, 1900s– proloculus.

Origin: A borrowing from Latin, combined with an English element. Etymons: pro- prefix², Latin loculus.

Etymology: < pro- prefix² + classical Latin loculus compartment (see loculus n.); originally in form proloculum, with alteration of the ending after Latin (neuter) nouns in -um, and with corresponding plural form prolocula.

Zoology.

The first chamber formed by the zygote of a foraminiferan.

ΘΚΠ

the world > animals > invertebrates > protozoa > class Sarcodina > order Rhizopoda > [noun] > suborder Foraminifera > member of > chamber formed by zygote

proloculus1905

1905 J. A. Cushman in Amer. Naturalist 39 538 The initial chamber which will be shown to have a decidedly phylogenetic bearing in the group is here given a distinctive name—the proloculum—to correspond with the term applied to the embryonic shell of other groups already worked out in the Metazoa.

1932 Amer. Midland Naturalist 13 88 The proloculi of all specimens at this locality are too large to be regarded as microspheric.

1952 R. C. Moore et al. Invertebr. Fossils ii. 40/2 The size of the proloculus of megalospheric forms varies considerably in certain species.

1981 Micropaleontology 27 71/1 Fewer algae are found in the proloculum, embryonic chambers, and outer chambers than in the intermediate chambers.

1997 T. Tomascik et al. Ecol. Indonesian Seas I. ix. 378 Whatever the mode of reproduction, the initial growth of all foraminifera begins with the formation of the first chamber called the proloculus.

This entry has been updated (OED Third Edition, June 2007; most recently modified version published online March 2022).

单词	proloculus
释义	proloculusn. Brit. /prəʊˈlɒkjᵿləs/, U.S. /proʊˈlɑkjələs/ Inflections: Plural proloculi, prolocula. Forms: 1900s– proloculum, 1900s– proloculus. Origin: A borrowing from Latin, combined with an English element. Etymons: pro- prefix², Latin loculus. Etymology: < pro- prefix² + classical Latin loculus compartment (see loculus n.); originally in form proloculum, with alteration of the ending after Latin (neuter) nouns in -um, and with corresponding plural form prolocula. Zoology. The first chamber formed by the zygote of a foraminiferan. ΘΚΠ the world > animals > invertebrates > protozoa > class Sarcodina > order Rhizopoda > [noun] > suborder Foraminifera > member of > chamber formed by zygote proloculus1905 1905 J. A. Cushman in Amer. Naturalist 39 538 The initial chamber which will be shown to have a decidedly phylogenetic bearing in the group is here given a distinctive name—the proloculum—to correspond with the term applied to the embryonic shell of other groups already worked out in the Metazoa. 1932 Amer. Midland Naturalist 13 88 The proloculi of all specimens at this locality are too large to be regarded as microspheric. 1952 R. C. Moore et al. Invertebr. Fossils ii. 40/2 The size of the proloculus of megalospheric forms varies considerably in certain species. 1981 Micropaleontology 27 71/1 Fewer algae are found in the proloculum, embryonic chambers, and outer chambers than in the intermediate chambers. 1997 T. Tomascik et al. Ecol. Indonesian Seas I. ix. 378 Whatever the mode of reproduction, the initial growth of all foraminifera begins with the formation of the first chamber called the proloculus. This entry has been updated (OED Third Edition, June 2007; most recently modified version published online March 2022). < n.1905
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