The Collaborative International Dictionary of English. 2000.
parethmoid bone — a paired deep bone of perichondral origin lying in the front of the orbit under the prefrontal. Also called pleurethmoid, lateral ethmoid, prefrontal, exethmoid, and also ectethmoid (latter only present in birds so not be be used in fishes) … Dictionary of ichthyology
ectethmoid — parethmoid (a paired deep bone lying in the front of the orbit under the prefrontal) … Dictionary of ichthyology
exethmoid — parethmoid (a paired deep bone of perichondral origin lying in the front of the orbit under the prefrontal. Also called pleurethmoid, prefrontal, exethmoid and, incorrectly ectethmoid, as this latter is only in birds) … Dictionary of ichthyology
lateral ethmoid — parethmoid (a paired deep bone of perichondral origin lying in the front of the orbit under the prefrontal. Also called pleurethmoid, prefrontal, exethmoid and, incorrectly ectethmoid, as this latter is only in birds) … Dictionary of ichthyology
pleurethmoid — parethmoid (a paired deep bone of perichondral origin lying in the front of the orbit under the prefrontal. Also called prefrontal, exethmoid and, incorrectly, ectethmoid as this latter is only in birds) … Dictionary of ichthyology
os ethmoideum laterale — (plural ossa ethmoidea lateralia)) parethmoid (a paired deep bone of perichondral origin lying in the front of the orbit under the prefrontal. Also called pleurethmoid, prefrontal, exethmoid and, incorrectly ectethmoid, as this latter is only in… … Dictionary of ichthyology
os praefrontale — (plural ossa praefrontalia)) prefrontal (a superficial, paired, dermal bone lying in front of the eye between the lacrymal and first supraorbital and covering and fusing with the parethmoid; a term often used for the lateral ethmoid or a portion… … Dictionary of ichthyology
prefrontal — a superficial, paired, dermal bone lying in front of the eye between the lacrymal and first supraorbital and covering and fusing with the parethmoid; a term often used for the lateral ethmoid or a portion of the lateral ethmoid of dermal origin … Dictionary of ichthyology
