-sperse, -spersed, -spersing, -spersion; spars-; -spargic +

(Latin: to scatter, to strew, to sprinkle)

rodentospargic
Spread by rodents.
sitospargic
Spread by food.
sparse
1. Thinly scattered; set or planted here and there; not dense. 3. In botany, not in any apparent regular order.

When the hair is sparse on the head, it is sparsus or "scattered" and thin as the Latin puts it. This all comes from spargo which referred to the "scattered sowing of seeds" meaning the hair hasn't been planted closely enough.

4. Etymology: from Latin sparsus, "scattered", past participle of spargere, "to scatter, to spread, to sprinkle".

"Our information on the events is still rather sparse."

sparsely
In a scattered or sparse manner; thinly: "The room was very sparsely furnished, with just a bed and a chair, which was also located in a sparsely populated area."
sparseness
The state of being sparse; that is, in a scattered state or condition.
sparsity
1. Opposed to denseness or thickness, describing what is widely scattered in isolated clumps; such as, sparse vegetation or a sparse crowd was scattered thinly through the auditorium.
2. With only a few scattered examples in a large area; not growing or existing in large amounts or quantities: "The sparsity of vegetation will only feed a small population of animals."
sperse
To disperse.
tactospargic
Spread by direct contact.
zoospargic
Spread by animals.