The word “defenestration” is derived from the Latin word for window: fenestra.

Lizards have skulls with only one fenestra on each side, the lower bar of bone below the second fenestra having been lost.

Most reptiles (including birds) are diapsids; mammals, with only one temporal fenestra, are called synapsids; and turtles, with no temporal fenestra, are anapsids.

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Birds and most reptiles are diapsids; mammals, with only one temporal fenestra, are called synapsids; and turtles, with no temporal fenestra, are anapsids.

The archosaur skull includes two new fenestra (skull openings).

An example of such a word would be the Latin word ‘fenestra’, which became ‘Fenster’ (window) in German.

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Birds and most reptiles are diapsids; mammals, with only one temporal fenestra, are called synapsids; and turtles, with no chronological fenestra, are anapsids.

Birds and most retiles are diapsids; mammals, with only one temporal fenestra, are called synapsids; and turtles, with no temporal fenestra are anapsids).

However, there are several related words in English which, like fenêtre, are derived from the Latin fenestra.

All of these window words come from the Latin fenestra (window).

The first of these is the mandibular fenestra, an opening through the jawbone.

The Swedish word for window – fönster, stems from the Latin fenestra, via the German fenster.

The opening, or fenestra, of the mandible was quite large, being 40% the length of the entire lower jaw.