lacrimal bone

American  

noun

Anatomy.

1. a small, thin, membrane bone forming the front part of the inner wall of each orbit.

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Etymology

Origin of lacrimal bone

First recorded in 1850–55

Example Sentences

The anterior portion of the lacrimal bone forms a shallow depression called the lacrimal fossa, and extending inferiorly from this is the nasolacrimal canal.

From Textbooks • Jun. 19, 2013

The ethmoid bone and lacrimal bone make up much of the medial wall and the sphenoid bone forms the posterior orbit.

From Textbooks • Jun. 19, 2013

The maxilla encircles the posterior border of the naris and extends dorsally above the naris to an extent sufficient to indicate the probable exclusion of the lacrimal bone from the narial border.

From Two New Pelycosaurs from the Lower Permian of Oklahoma by Fox, Richard C.