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por·tal

(pōr'tăl),
1. Relating to any porta or hilum, specifically to the porta hepatis and the portal vein.
2. The point of entry into the body of a pathogenic microorganism.
Synonym(s): port
[L. portalis, pertaining to a porta (gate)]
Alcohol noun A fortified wine—i.e., with alcohol added—from the Douro Valley in northern Portugal which reaches 19–20% by volume (normally wine ranges from 11% to 13.5%. It is typically red and sweet, but also comes in dry, semi-dry and white varieties
Informatics (1) noun Most generally, a place where information goes into or out of a computer, or both (2) Internet noun A number that is part of a URL, appearing after a colon (:) right after the domain name; every service on an Internet server listens on a particular port number on that server. Most services have standard port numbers—e.g., Web servers normally listen on port 80; services can also listen on non-standard ports, in which case the port number must be specified in a URL when accessing the server(3) verb To translate software from one platform—e.g., Windows—to another—e.g., Apple’s OS X
Radiation oncology Field, portal The site on the skin where the radiation enters the body

port

Radiation oncology Field, portal The site on the skin where the radiation enters the body. See Mantle port, Radiation oncology, Subcutaneous port, Venous port.

por·tal

(pōr'tăl)
1. Relating to any porta or hilus, specifically to the porta hepatis and the portal vein.
2. The point of entry into the body of a pathogenic microorganism.
3. Synonym(s): field size. Synonym(s): port.
[L. portalis, pertaining to a porta (gate)]

port,

n in radiology, the opening through which radiographic photons or the useful beam of radiation exits from the head of a dental radiography machine.

port

the upward curve in a bar bit on a horse's bridle.
References in periodicals archive ?
Once their drawings were finished, students used a black permanent marker to draw over all their pencil lines (yes, even each little screw in the porthole *sigh*), and then colored their porthole frames and sea life with markers.
Porthole Cruise Magazine is published by the PPI Group in Fort Lauderdale, FL and serves as an ultimate resource guide for experienced and first time cruisers.
10 squares 7 1/2" x 7 1/2," fussy-cut centered on portholes
For the horizontal polarization, it can be noticed that the minimum propagation loss is due to the point B with 2 to 4 dB final propagation loss due to the propagation through the glass of the porthole window and the diffraction from the edge of the porthole window.
There is also sleek blue lighting above the cupboards and a stainless steel breakfast bar and another porthole door to the hall.
This website home of the world's most famous comic creator is a great porthole into the Marvel universe.
The patented locking system allows easy access to the bag spout through a large viewing porthole.
Some doors are ordered with an optional porthole that also must be cut out.
Newport's Porthole Players will stage `You're a Good Man, Charlie Brown,' the musical version of the "Peanuts" comic strip.
Peering through a 30 centimeter (12 inch) porthole, Humphris spied a hydrothermal vent.
Supposedly "Bob" and "Roberta" were separately responsible for the displayed pieces, with Roberta fashioning nests (like the one described above) and Bob sulkily causing chaos--dropping cowpat-like lumps of concrete on the gallery floor--or watching a small television painted red except for a little porthole onto the screen and tuned, on my visit, at least, to the news (Partial TV).