| semispinalis thoracis | <anatomy, muscle> Origin, transverse processes of fifth to eleventh thoracic vertebrae; insertion, spinous processes of first four thoracic and fifth and seventh cervical vertebrae; action, extends vertebral column; nerve supply, dorsal primary rami of cervical and thoracic spinal nerves. Synonym: musculus semispinalis thoracis, musculus semispinalis dorsi, semispinal muscle of thorax. (05 Mar 2000) |
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| Semisulcospina | A genus of operculate snails (family Pleuroceriidae, subclass Prosobranchiata). An oriental form, Semisulcospina libertina, is the first intermediate host of a number of trematodes, including Paragonimus westermani. Origin: semi-+ L. Sulcus, a furrow + spina, thorn, spine (05 Mar 2000) |
| semisulcus | A slight groove on the edge of a bone or other structure, which, uniting with a similar groove on the corresponding adjoining structure, forms a complete sulcus. (05 Mar 2000) |
| semisulfur mustard | 2-(2-chloroethylthio)ethanol An antineoplastic agent. Synonym: mustard chlorohydrin, semisulfur mustard. (05 Mar 2000) |
| semisupination | The attitude or assumption of a partly supine position. (05 Mar 2000) |
| semisupine | Denoting semisupination. (05 Mar 2000) |
| semisynthetic | <chemistry> Produced by chemical manipulation of naturally occurring substances. (18 Nov 1997) |
| semisystematic name | A name of a chemical of which at least one part is systematic and at least one part is not (i.e., is trivial). For example, calciferol includes the -ol suffix denoting an -OH radical, while calcifer-, which has no systematic meaning, is used only in this word. Cortisone contains the -one suffix, indicating a ketone group, but the rest of the term derives from cortex (adrenal). Hippuric acid (trivial) may be defined as N-benzoylglycine (semitrivial name); benzoyl is systematic for the C6H5-CO-radical, whereas glycine is the trivial name for alpha-aminoacetic (or 2-aminoethanoic, to be completely systematic) acid, and the N signifies that the benzoyl is attached to the nitrogen of glycine; from this, the structure C6H5-CO-NH-CH2-COOH is uniquely defined. Many generic or nonproprietary names of drugs, including USAN names, hormones, etc., are semitrivial in this chemical sense, although often termed trivial names; distinction between trivial and semitrivial is not often made. Synonym: semitrivial name. (05 Mar 2000) |
| semita | Origin: L, a path. <zoology> A fasciole of a spatangoid sea urchin. Source: Websters Dictionary (01 Mar 1998) |
| semitangent | <geometry> The tangent of half an arc. Source: Websters Dictionary (01 Mar 1998) |
| semitendinosus | <anatomy, muscle> Origin, ischial tuberosity; insertion, medial surface of the upper fourth of shaft of tibia; action, extends thigh, flexes leg and rotates it medially; nerve supply, tibial. Synonym: musculus semitendinosus. (05 Mar 2000) |
| semitendinous | Composed in part of tendon; denoting the semitendinosus muscle. Synonym: semitendinosus. Origin: L. Semitendinosus (05 Mar 2000) |
| semitertian | <medicine> Having the characteristics of both a tertian and a quotidian intermittent. An intermittent combining the characteristics of a tertian and a quotidian. Source: Websters Dictionary (01 Mar 1998) |
| semitic | Of or pertaining to Shem or his descendants; belonging to that division of the Caucasian race which includes the Arabs, Jews, and related races. Alternative forms: Shemitic] Semitic language, a name used to designate a group of Asiatic and African languages, some living and some dead, namely: Hebrew and Phoenician, Aramaic, Assyrian, Arabic, Ethiopic (Geez and Ampharic). Source: Websters Dictionary (01 Mar 1998) |
| semitrivial name | A name of a chemical of which at least one part is systematic and at least one part is not (i.e., is trivial). For example, calciferol includes the -ol suffix denoting an -OH radical, while calcifer-, which has no systematic meaning, is used only in this word. Cortisone contains the -one suffix, indicating a ketone group, but the rest of the term derives from cortex (adrenal). Hippuric acid (trivial) may be defined as N-benzoylglycine (semitrivial name); benzoyl is systematic for the C6H5-CO-radical, whereas glycine is the trivial name for alpha-aminoacetic (or 2-aminoethanoic, to be completely systematic) acid, and the N signifies that the benzoyl is attached to the nitrogen of glycine; from this, the structure C6H5-CO-NH-CH2-COOH is uniquely defined. Many generic or nonproprietary names of drugs, including USAN names, hormones, etc., are semitrivial in this chemical sense, although often termed trivial names; distinction between trivial and semitrivial is not often made. Synonym: semitrivial name. (05 Mar 2000) |
| semiconservative replication |
A common mode of replication in which both strands of a DNA double helix are copied by the replication machinery to give a pair of progeny DNA molecules.
Ãâó: www.nature.com/nrm/journal/v3/n6/glossary/nrm831_g...
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| seminiferous tubule |
A structural unit in the adult testis; it consists of somatic Sertoli cells and germ cells at several developmental stages.
Ãâó: www.nature.com/nrg/journal/v3/n10/glossary/nrg911_...
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| semiconservative replication |
The mode by which DNA replicates. Each strand acts as a template for a new double helix. The established model of DNA replication in which each double-stranded molecule is composed of one parental strand and one newly polymerized strand. See template.
Ãâó: helios.bto.ed.ac.uk/bto/glossary/s.htm
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| semantics |
In linguistics, the study of meanings. In computer science, the term is frequently used to differentiate the meaning of an instruction from its format. The format, which covers the spelling of language components and the rules controlling how components are combined, is called the language's syntax. For example, if you misspell a command, it is a syntax error. If, on the other hand, you enter a legal command that does not make any sense in the current context, it is a semantic error.
Ãâó: www.angelfire.com/anime3/internet/programming.htm
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| semen |
a whitish, viscid fluid that contains spermatozoa and is ejaculated from the penis.
Ãâó: www.aegis.com/pubs/beta/1999/be990414.html
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| SEM | of or relating to or characteristic of Semites |
|---|---|
| SEM | chiefly but not exclusively terrestrial |
| SEM | a major branch of the Afro-Asiatic language family |
| SEM | of or relating to or characteristic of Semites |
| SEM | of or relating to the group of Semitic languages |
| SEM | a deity worshipped by the ancient Semites |
| SEM | able to communicate in a Semitic language |
| SEM | the musical interval between adjacent keys on a keyboard instrument |
| SEM | a trailer having wheels only in the rear |
| SEM | a trance-like state in which the person can follow instructions but voluntary action is weak or absent |
| SEM | the quality of allowing light to pass diffusely |
| SEM | almost transparent |
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