Defn: Any one of the teeth back of the incisors and canines.
Defn: Shaped like a chisel; as, the scalpriform incisorsof rodents.
There are forty-four teeth; theincisors have no strong pit.
These changes require time; and at two years past the jaw will usually appear as in the cut, where four of the permanent central incisors are seen.
The skulls of the three fully mature adults are large with a wide zygomatic breadth, large rostrum, and large upper incisors as in scopulorum; but the upper molars are small and the bullae are rather small and narrow as in fallax.
Milk teeth are easily distinguished from permanent incisorsby their smallness, whiteness, and their more distinct necks.
It is well to lift the lips above the upper incisors to see if they are unduly worn--a sure sign of "cribbing.
The incisors are six in number in each jaw when the mouth is complete, at the age of four.
The summits of the incisors were infolded to a small extent.
The incisors were scarcely, if at all, infolded, and there is a rudiment of the fifth metacarpal (fig.
The incisors are chisel-shaped, and the canines tend to become isolated so as in the now specialized forms to occupy nearly the middle of a longer or shorter gap between the incisors and premolars.
The incisors are small and the canines scarcely enlarged; the latter having a gap on each side in the lower, but only one on their hinder aspect in the upper jaw.
The summits of the incisors are infolded, producing, when partially worn, the "mark.
The three incisors of the upper jaw are arranged in a continuous arched series, and have crowns with broad cutting edges; the first or middle incisor is often larger than the others.
The milk-dentition, as in other marsupials, is confined to a single tooth on each side of each jaw, the other molars and incisors being never changed.
Owing to the slight union of the two halves of the lower jaw in front in many species the two lower incisors work together like the blades of a pair of scissors.
The more typical representatives of the group constitute the sub-family Macropodinae, in which the cutting-edges of the upper incisors are nearly level, or the first pair but slightly longer than the others (fig.
In Macropus giganteus and its immediate allies, the premolars and sometimes the first molar are shed, so that in old examples only the two posterior molars and the incisors are found in place.
There is apparently no limit to the growth of tusks, so that under favourable circumstances they might attain enormous dimensions, owing to the age of the animal, and absence of the attrition which keeps the incisors of rodents down.
The jaws are weak, the incisors are six above and eight below.
The incisorsare orange yellow; the claws yellowish.
There are no lower incisors (except in a fossil species), and only two of the molar teeth are to be seen on each side of the jaw at a time, which are pushed out and replaced by others which grow from behind.
Dentition approaches the next genus, there being only one pair of unicuspidate upper incisors placed, one by each upper canine.
These have incisors in both jaws, which vary in number, the lower ones slanting forward.
The dentition of this genus is as follows: Either four or six incisors in the upper jaw, but always six in the lower; four premolars and three molars in each jaw, upper and lower.
The first and second upper incisors are small, with the summits of their crowns divided by deep transverse grooves into an anterior and a posterior cusp of nearly equal height; the third large and canine-like.
The presence of two pairs of upper and one pair of lower incisors is characteristic of the members of the subfamily Cystophorinae, in which the teeth of the cheek-series are generally one-rooted.
The upper incisorshave simple, pointed crowns, and vary in number in the different groups.
In the typical group, or subfamily Phocinae, the incisors are 3/2.
Carnivora in having but two incisors on each side of the lower jaw, the one corresponding to the first (very small in the true otters) being absent.
The incisor line is curved, the outer teeth being placed posteriorly to the others: lower incisors inclined forwards.
Here the removal of the lowerincisors is common, and circumcision entirely absent.
Pentelikon, Attica, shows the absence in the adult state of upper and lower incisors and upper canines, much the same condition being indicated in an Indian skull.
The incisors begin to vary both in number and in form.
The internal incisors are larger than the external pair, in the upper jaw, smaller than the external pair, in the lower jaw.
Unlike those of recent man, the incisors display folds of enamel on the inner or lingual surfaces, a condition rarely observed in the modern cutting teeth.
COR'NER-TEETH, the lateralincisors of a horse, above and below.
Such are the elongation of the little finger in Pterodactylus, for the extension of the alar membrane; and the deflexion of the inferior incisors in Dinotherium, for the purposes of digging or anchorage.
Here are four incisors in the upper jaw; at one time there were six.
Here are two large projecting incisors in the middle, with their tips worn away obliquely on the outer side, by the action of their opponents in the upper jaw, which are also worn inwardly.
A year hence, the central incisors will be worn quite flat, and their marks obliterated; the canines will be fully grown tusks, the second molar will have reached its full height, and all the teeth will be of the same level.
Claws, sharp incisorsor rodent teeth, with lateral incisors or false molars; live exclusively under the earth, and cast up the mould.
There is a large space between the outer incisors and the front grinders.
Our examination of American specimens reveals only one differential character: In Myotis the outer upper incisor is distinctly larger than the inner, whereas the two incisors are of approximately equal size in Pipistrellus.
The molars are three, and the incisors usually orange in colour; but sometimes the upper incisors are white as in Rh.
The incisors of the upper jaw are grooved with two grooves.
The incisors are only one on each side of the upper jaw.
On the mandible the great length of the diastema between the incisors and premolars is a Giraffine characteristic.
In the lower jaw the canines were also strong, but the incisors are not certainly known to be more than two pairs.
The incisors have enamel on the front and lateral faces only.
The outerincisors are larger than the inner, thus differentiating the genus from Propithecus.
The enlarged incisors of both jaws do not seem to have grown from persistent pulps.
The tail is long as in Avahis; the inner incisors are larger than the outer.
These Bats have no tail; there is no true molar tooth; the canines are large, and the single pair of upperincisors quite caniniform, and very sharp and strong.
The teeth vary in the different genera, but {150} the upper incisors are never less than three, and may be as many as five in the upper jaw and six in the lower.
They also differ in that there are never more than a single pair of incisors {281} in the upper jaw, and very usually there are none.
The number of incisors is two on each side of each jaw.
The incisors are chisel-shaped, with a pit on the free surface.
Three incisors bite against the three of the upper jaw.
Between the incisors and premolars of a dog come the characteristic biting teeth, or canines, absent in the rabbit.
Both her upper and lower incisors had been extracted, and her upper lip perforated by a number of small holes, extending in an arch from one corner to the other.
The upper incisors of the Malay, apart from their prognathous disposition, have occasionally a distinctly pithecoid form, their anterior surface being convex, and their lingual surface slightly concave.
Then follow the Eocene Palaeolemures, or Adapida, with forty teeth, they having lost one pair of incisors in each jaw.
The discovery that 13 percent of the fawns and 84 percent of the yearlings killed during January, February, and March had not yet shed their deciduous incisors and premolars, respectively, also fits well with the rest of our information.
The deciduous first incisors of fawns and the deciduous premolars of yearlings are usually replaced with permanent teeth by December (Severinghaus 1949).
However, because the incisors had been lost from many of the wolf-kills, and because the tooth-wear technique was used at checking stations, both methods were applied in the laboratory.
Incisor sectioning requires onlyincisors and appears to be much more accurate.
Kuehn sectioned the incisors of the deer jaws and determined their ages.
Sectioning her incisors and reading the apparent annulations indicated that she probably was 3+ or 4+ years old.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "incisors" in a variety of sentences. We hope that you will now be able to make sentences using this word.
