-ular

(Latin: of, relating to, or resembling; compound of the suffixes -ule, "little, small" and -ar, "pertaining to, of the nature of, like"; and so, -ular is a combining form meaning: referring to something "specified": appendicular, molecular, pedicular; as well as, a combining form meaning "resembling" something specified: circular, globular, tubular)

perifollicular
Surrounding or around a follicle.
periocular
Near or around the eye.
perivascular
Situated around or near a vessel or the tissues surrounding a blood vessel.
perpendicular
plurilocular
polyarticular
Involving many joints, as opposed to monoarticular (affecting just one joint).
pustular
A reference to, or characterized by, pustules.
quadrangular (kwohd-RANG-you-luhr) (adjective) (usually not comparable)
Having four distinct and visible corners or bends: Squares, parallelograms, and rectangles are all quadrangular shapes of buildings or other structures.
radicular
regular
reticular
retroauricular
saccular
1. A small pouch; for example, the alveolar saccules (little air pouches) within the lungs.
2. Resembling a sac or saccule.
scapular
secular
1. Worldly rather than spiritual.
2. Not specifically relating to religion or to a religious body: "They were playing secular music instead of sacred hymns."
3. Relating to or advocating secularism.
4. Not bound by monastic restrictions; especially, not belonging to a religious order (a reference to the clergy).
5. Occurring or observed once in an age or century.
6. Lasting from century to century.
7. Etymology: it was used in early Christian texts for the "temporal world"; as opposed to the "spiritual world"; and that was the sense in which its derived adjective Latin saecularis passed via Old French seculer into English.

The more familiar modern English "non-religious" meaning came into the language at about the 16th century.