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n. pl. max·il·lae (măk-sĭl′ē) or max·il·las
1. Anatomy Either of a pair of bones of the human skull fusing in the midline and forming the upper jaw.
2. A homologous bone of the skull in other vertebrates.
3. Either of two laterally moving appendages situated behind the mandibles in insects and most other arthropods.

[Latin, jawbone.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


Two bones forming the upper jaw.
Dictionary of Unfamiliar Words by Diagram Group Copyright © 2008 by Diagram Visual Information Limited
References in classic literature ?
We see the same great law in the construction of the mouths of insects: what can be more different than the immensely long spiral proboscis of a sphinx-moth, the curious folded one of a bee or bug, and the great jaws of a beetle?--yet all these organs, serving for such different purposes, are formed by infinitely numerous modifications of an upper lip, mandibles, and two pairs of maxillae. Analogous laws govern the construction of the mouths and limbs of crustaceans.
So with the mouths of insects, we have only to suppose that their common progenitor had an upper lip, mandibles, and two pair of maxillae, these parts being perhaps very simple in form; and then natural selection will account for the infinite diversity in structure and function of the mouths of insects.
On its first arrival it appeared very thirsty, and with exserted maxillae drank eagerly of drops of water, this same circumstance has been observed by Strack: may it not be in consequence of the little insect having passed through a dry and rarefied atmosphere?
Following completion of this protocol, protraction force is applied to move the maxillae forward (12).
Rigolizzo, ""All-on-4" immediate-function concept for completely edentulous maxillae: a clinical report on the medium (3 years) and long-term (5 years) outcomes," Clinical Implant Dentistry and Related Research, vol.
First maxillae are modified into sucking disks and the rim was supported with 41-42 rods which was overlapping small sclerites.
The zygomatic implant, originated and developed by Dr PI Branemark, has been used as posterior anchorage for implant-supported prostheses in patients with atrophic maxillae since 1990.
The maxillary apparatus of each individual was extracted after an anterodorsal incision and mounted on a slide to study the details of both maxillae and the mandibles under an optical microscope.
(2007) Short implants placed one-stage in maxillae and mandibles: a retrospective clinical study with 1 to 9 yrs of follow up.
Numerous color photographs illustrate treatment planning and implant positioning, soft tissue management, autogenous bone grafts, reconstruction of craniofacial function, and zygomatic implants as a surgical alternative for atrophic maxillae. The last chapter presents Francischone's classification of implant prostheses into eight groups.