Dictionary » G » Gills



a woody glen; a narrow valley containing a stream.

Origin: Icel. Gil.

1. (Science: anatomy) An organ for aquatic respiration; a branchia. Fishes perform respiration under water by the gills. (Ray)

gills are usually lamellar or filamentous appendages, through which the blood circulates, and in which it is exposed to the action of the air contained in the water. In vertebrates they are appendages of the visceral arches on either side of the neck. In invertebrates they occupy various situations.

2. (Science: botany) The radiating, gill-shaped plates forming the under surface of a mushroom.

3. (Science: zoology) The fleshy flap that hangs below the beak of a fowl; a wattle.

4. The flesh under or about the chin.

5. One of the combs of closely ranged steel pins which divide the ribbons of flax fibre or wool into fewer parallel filaments. [Prob. So called from f. Aiguilles, needles] gill arches, gill bars.

(Science: anatomy) horny filaments, or progresses, on the inside of the branchial arches of fishes, which help to prevent solid substances from being carried into gill cavities.

Origin: dan. Giaelle, gelle; akin to 75c

Sw. Gal, Icel. Gjolnar gills; cf. As. Geagl, geahl, jaw.

1. A young woman; a sweetheart; a flirting or wanton girl. Each jack with his gill.

2. (Science: botany) The ground ivy (nepeta Glechoma); called also gill over the ground, and other like names.

3. Malt liquor medicated with ground ivy. Gill ale. Ale flavored with ground ivy.

(Science: botany) alehoof.

Origin: Abbrev. From Gillian.

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The Most Primitive Respiratory System

Actually, I'd like to add that lungs aren't more advanced than gills, anyway, they're just a structure that works under different conditions. Gills are often much more efficient, since they need to get oxygen from a much lower environmental concentration. ...

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by Darby
Tue Mar 27, 2012 8:02 pm
Forum: Evolution
Topic: The Most Primitive Respiratory System
Replies: 11
Views: 7827

bottom and surface dwelling fish

Q. Values of the total surface area of gills (in arbitrary units) per unit gram body weight of two types of fish are given below: Fish I: 442 Fish II: 1725 One of them is a bottom dwelling fish while the other is a surface dwelling fish. Identify ...

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by Adz795
Tue Dec 27, 2011 8:34 am
Forum: Zoology Discussion
Topic: bottom and surface dwelling fish
Replies: 11
Views: 5763

what about gills?

... was extreme enough that there was even a fluttering sound to it rather than a single movement click sound. This got me to thinking about vestigial gills. So, I got the idea to breathe deeply and maybe that would calm it down. Sure enough, that seemed to help. Now, I know, I was just waking up and ...

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by notRoman
Wed Dec 07, 2011 9:20 am
Forum: Evolution
Topic: what about gills?
Replies: 2
Views: 2517


... to the left. They for years depicted Haeckel's forged embryo drawings, produced with the aim of proving the lie that human embryos possess gills, as evidence for evolution. They never declared that they were a hoax. ------------------------------------------------------------------------------------------- ...

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by ahmd1432
Mon Oct 17, 2011 7:50 pm
Forum: Evolution
Replies: 63
Views: 36711


... In polychaetes: http://www.liveinternet.ru/showjournal.php?journalid=2443535&tagid=1022068 Etc. Further. Human embryo at an early stage has gills, caudal fin ... But he can not use them. This is because genetic technology support was lost when the larva was in the placenta. Or in the egg. ...

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by LeoPol
Mon Sep 26, 2011 9:40 am
Forum: Evolution
Topic: Theories - Origin of Life
Replies: 563
Views: 1127990
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