a
Gastropoda Gas*trop"o*da, n. pl., [NL., fr. Gr. ?, ?, stomach + -poda.] (Zo["o]l.) One of the classes of Mollusca, of great extent. It includes most of the marine spiral shells, and the land and fresh-water snails. They generally creep by means of a flat, muscular disk, or foot, on the ventral side of the body. The head usually bears one or two pairs of tentacles. See {Mollusca}. [Written also {Gasteropoda}.] [1913 Webster]

Note: The Gastropoda are divided into three subclasses; viz.: ({a}) The Streptoneura or Dioecia, including the Pectinibranchiata, Rhipidoglossa, Docoglossa, and Heteropoda. ({b}) The Euthyneura, including the Pulmonata and Opisthobranchia. ({c}) The Amphineura, including the Polyplacophora and Aplacophora. [1913 Webster]


The Collaborative International Dictionary of English. 2000.

Look at other dictionaries:

  • A — ([.a] emph. [=a]). 1. [Shortened form of an. AS. [=a]n one. See {One}.] An adjective, commonly called the indefinite article, and signifying one or any, but less emphatically. At a birth ; In a word ; At a blow . Shak. Note: It is placed before… …   The Collaborative International Dictionary of English

  • A — (named [=a] in the English, and most commonly [ a] in other languages). The first letter of the English and of many other alphabets. The capital A of the alphabets of Middle and Western Europe, as also the small letter (a), besides the forms in… …   The Collaborative International Dictionary of English

  • A — ([.a]), prep. [Abbreviated form of an (AS. on). See {On}.] 1. In; on; at; by. [Obs.] A God s name. Torn a pieces. Stand a tiptoe. A Sundays Shak. Wit that men have now a days. Chaucer. Set them a work. Robynson (More s Utopia). [1913 Webster] 2.… …   The Collaborative International Dictionary of English

  • A- — A, as a prefix to English words, is derived from various sources. (1) It frequently signifies on or in (from an, a forms of AS. on), denoting a state, as in afoot, on foot, abed, amiss, asleep, aground, aloft, away (AS. onweg), and analogically,… …   The Collaborative International Dictionary of English

  • A — [From AS. of off, from. See {Of}.] Of. [Obs.] The name of John a Gaunt. What time a day is it ? Shak. It s six a clock. B. Jonson. [1913 Webster] …   The Collaborative International Dictionary of English

  • A — A barbarous corruption of have, of he, and sometimes of it and of they. So would I a done A brushes his hat. Shak. [1913 Webster] …   The Collaborative International Dictionary of English

  • A — An expletive, void of sense, to fill up the meter [1913 Webster] A merry heart goes all the day, Your sad tires in a mile a. Shak. [1913 Webster] …   The Collaborative International Dictionary of English

  • a — I. noun (plural a s or as) Usage: often capitalized, often attributive Date: before 12th century 1. a. the 1st letter of the English alphabet b. a graphic representation of this letter c. a speech counterpart of orthographic a 2. the sixth tone… …   New Collegiate Dictionary

  • A — s. m. La première lettre de notre alphabet, et la première des voyelles. La lettre A. Un grand A. Un petit a. Un A majuscule. Un a romain. Un a italique. Des a mal formés. La voyelle A. A est long dans Blâme. A est bref dans Glace. A, dans les… …   Dictionnaire de l'Academie Francaise, 7eme edition (1835)

  • À — préposition Lorsque à précède l’article masculin suivi d’une consonne ou d’un h aspiré, il se contracte en au. Il fait au pluriel aux. Il exprime cinq rapports différents : 1° Possession; 2° Tendance, direction vers un lieu, vers un objet; 3°… …   Dictionnaire de l'Academie Francaise, 8eme edition (1935)

  • A — The letter A is the first letter in the Latin alphabet. Its name in English is a [ a , Merriam Webster s Third New International Dictionary of the English Language, Unabridged, (1993)] (pronEng|eɪ), plural A s, A s, a s, or a s . [ Merriam… …   Wikipedia

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