from The Century Dictionary.
- Of or pertaining to an alula.
from the GNU version of the Collaborative International Dictionary of English.
- adjective (Zoöl.) Pertaining to the alula.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- adjective zoology Pertaining to the
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- adjective pertaining to alulae
from Wiktionary, Creative Commons Attribution/Share-Alike License
Of the three digits, the one on the leading or anterior surface of the hand (the one that looks like it should be a thumb, or digit I) is often called the alular digit.
A projecting structure termed the extensor process (or extensor attachment) is present between the carpal trochlea and the alular digit; it belongs to metacarpal I (also called the alular metacarpal), but this is hard to appreciate in modern birds because metacarpal I is fused imperceptibly into the carpometacarpus as mentioned above [in the adjacent diagram, from