-ar

(Latin: a suffix; pertaining to, of the nature of, like; denoting an agent)

allobar (s) (noun), allobars (pl)
1. A form of a chemical element having an atomic weight different from that of the naturally occurring form.
2. An isotope with a different atomic weight than the naturally occurring form of the same element.
altar (AWL tur) (s) (noun), altars (pl)
Place of worship; a stand or platform in a place of worship: "He placed the Bible on the altar as he read passages to the congregation."
The altar is so named because it is where a man’s alteration begins.
—Evan Esar
altar, alter
altar (AWL tur) (noun)
A stand or platform used in a place of worship: The minister placed the Bible on the altar as he read passages to the congregation.

Catherine knelt at the altar to pray.

alter (ALW tur) (verb)
1. To change, transform, make different, modify: The blond wig seemed to completely alter Jane's appearance. She said she would also alter her dress.
2. To castrate or to spay an animal; such as, a cat or a dog: The family dog was taken to the animal center so the vet could alter it.

The minister wanted to alter the church altar before the next worship service.

alveolar
amphistylar
In architecture, having columns at both front and back or on each side, as some Greek temples.
bibliopolar (s) (noun), bibliopolars (pl)
Referring to, or belonging to, booksellers; especially, antiquarian booksellers.
bilinear
binocular
1. With both eyes, as in binocular vision.
2. With two eyepieces, as in a binocular microscope.
3. Involving or using both eyes, or relating to vision using both eyes.

As stated above, binoculars are field glasses adapted to the use of both eyes, in contrast with the telescope, which is a monocular instrument.

biosonar
1. The use of ultrasonic instruments to analyze and map parts of the body.
2. The use by certain animals of echoes of sounds they produce to locate objects in the perceptual field as with bats as they move around.
biovar
A group (infrasubspecific) of bacterial strains distinguishable from other strains of the same species on the basis of physiological characters. Formerly called biotype.
bipolar
bipolar electrocardiogram (s) (noun), bipolar electrocardiograms (pl)
An electronic instrument which obtains information by recording the differences in the voltages of two electrodes at different sites or parts of the surfaces of a body.
bipolar electrocautery (s) (noun), bipolar electrocauteries (pl)
An surgical dissection in which both active and return electrodes are incorporated into a single hand-held instrument, so that the current passes between the tips of the two electrodes and affects only a small amount of tissue.
bursar
carpal