form-, -form, forma-, format-

(Latin: shape, structure, figure, outer appearance, composition, to compose; visual appearance; spacial arrangement; to develop or to acquire; to produce)

acariform (s) (noun), acariforms (pl)
Shaped or in the form of a mite or mites: "Using powerful microscopes in the biology laboratory, the students studied and drew acariforms as part of their class assignment."
Acariformes (pl) (noun)
Diverse suborder of mites comprising three subgroups, Astigmata, Oribatei, Prostigmata; including phytophagous, fungivorous, predatory, and parasitic forms: "The lecture in the zoological department at the university focused on Acariformes which was a topic of great interest to the veterinarian students."
Accipitriformes
In some classifications, an alternative name for the Falconiformes.
2. Bird: of prey; such as, raptor, raptorial bird; any of numerous carnivorous birds that hunt and kill other animals.
aciculiform (adjective), more aciculiform, most aciculiform
Needle-shaped: "The aciculiform stem was slender like a needle or a bristle."
aciform (adjective)
Needle-shaped or in the form of a needle.
acinaciform (adjective)
1. Scimeter-shaped or an oriental sword: "Certain plants have acinaciform leaves."
2. Shaped like a short, curved sword: "There are certain fungal spores that have acinaciform shapes."
aciniform
Shaped like an acinus, or grape.
actiniform
1. Having or displaying a ray-like or radial form; rayed.
2. Exhibiting radiate form or structure; such as, the ray fungus or the sea anemone.
aculeiform
Spine-shaped, like a prickle.
adeniform
Glandlike; of glandular appearance.
adipoceriform
Having the form or appearance of adipocere.
albuminiform
aliform
Wing-shaped; applied to muscles, as in insects; an alternate term is "alary".
Amphora transformed into @
It is apparently from amphora that we get the @ symbol.
anginiform
Resembling angina.

Inter-related cross references, directly or indirectly, involving word units dealing with "form, shape, appearance": eido-; figur-; icono-; ideo-; imag-; morpho-; -oid; typo-.