| apex |
The highest point of a cone-shaped snail shell. See snails.
Ãâó: www.kgs.ku.edu/Publications/ancient/vocab.html
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|---|---|
| aperture |
A metal block containing a hole through which the radiation (photon or proton) beam passes. Each portal for each patient requires a custom-made aperture. The shape of the hole is the approximate shape of the target being treated by the beam. Every patient has her or his own set of apertures; no other patients use them.
Ãâó: www.llu.edu/proton/patient/glossary.html
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| aperient |
a mild and gentle-acting laxative.
Ãâó: www.n101.com/HealthNotes/HNs/Herb/Herb_Terms.htm
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| aperture |
A small opening such as a camera shutter through which light rays pass to expose film when the shutter is open.
Ãâó: history.nasa.gov/EP-95/glossary.htm
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| apex |
A structure consisting of the shoot apical meristem plus one to several primordial leaves, usually measuring from 0.1-1.0 mm in length; in instances where more mature leaves are included, the structure can measure up to several centimeters in length.
Ãâó: www.sivb.org/edu_terminology.asp
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