| SEMI | subendocardial myocardial infarction |
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| SIQR | semi-interquartile range |
| SP | sacroposterior; sacrum to pubis; salivary progesterone; schizotypal personality; semi-private [room]... |
| MSRV | Modified Semi-Solid Rappaport Vassiliadis |
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| SCC | semi-circular canals |
| semi pupa | <zoology> The young of an insect in a stage between the larva and pupa. Source: Websters Dictionary (01 Mar 1998) |
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| pupa | Origin: L. Pupa girl. Doll, puppet, fem. Of pupus. Cf. Puppet. 1. <zoology> Any insect in that stage of its metamorphosis which usually immediately precedes the adult, or imago, stage. Among insects belonging to the higher orders, as the Hymenoptera, Diptera, Lepidoptera, the pupa is inactive and takes no food; in the lower orders it is active and takes food, and differs little from the imago except in the rudimentary state of the sexual organs, and of the wings in those that have wings when adult. The term pupa is sometimes applied to other invertebrates in analogous stages of development. 2. <zoology> A genus of air-breathing land snails having an elongated spiral shell. Coarctate, or Obtected, pupa, a pupa which is incased in the dried-up skin of the larva, as in many Diptera. Masked pupa, a pupa whose limbs are bound down and partly concealed by a chitinous covering, as in Lepidoptera. Source: Websters Dictionary (01 Mar 1998) |
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| semi | <prefix> A prefix signifying half, and sometimes partly or imperfectly; as, semiannual, half yearly; semitransparent, imperfectly transparent. The prefix semi is joined to another word either with the hyphen or without it. In this book the hyphen is omitted except before a capital letter; as, semiacid, semiaquatic, semi-Arian, semiaxis, semicalcareous. Origin: L. Semi; akin to Gr, Skr. Sami-, AS. Sam-, and prob. To E. Same, from the division into two parts of the same size. Cf. Hemi-, Sandelend. (29 Oct 1998) |
| semi-apochromatic objective | <microscopy> A compromise, in the correction for chromatic and spherical aberration, between achromatic and apochromatic objectives, such as a fluorite objective. (05 Aug 1998) |
| semi-closed anaesthesia | Inhalation anaesthesia using a circuit in which a portion of the exhaled air is exhausted from the circuit and a portion is rebreathed following absorption of carbon dioxide. (05 Mar 2000) |
| semi-closed circle | A circuit for administration of an inhalation anaesthetic in which partial rebreathing with carbon dioxide absorption is combined with loss from the circuit of a portion of respired gases through valves. (05 Mar 2000) |
| semi-open anaesthesia | <anaesthetics> Inhalation anaesthesia in which a portion of inhaled gases is derived from an anaesthesia circuit while the remainder consists of room air. (05 Mar 2000) |
| semi-vegetarian | A vegetarian who consumes dairy products, eggs, chicken, and fish, but does not consume other animal flesh. (05 Mar 2000) |
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