Singular of ads is ad.

Plural: adscents

ETYM Latin adscitus, p. p. of adsciscere, asciscere, to take knowingly; ad + sciscere to seek to know, approve, scire to know.
1. Added or derived from something outside; not inherent.
2. Added to supplement.
3. Added; additional; supplementary; auxiliary.

ETYM Latin adscriptus, p. p. of adscribere to enroll. Related to Ascribe.
1. (Printing) Written or printed immediately following another character and aligned with it.
2. (Used of persons) Bound to a tract of land; hence their service is transferable from owner to owner; SYN. adscripted.
Attached or feudally bound to the soil or earth.

Plural: adscriptions

Attribution, act of ascribing

Plural: adsignifications

Plural: ADSLs

Acronym for asymmetric digital subscriber line. Technology and equipment allowing high-speed digital communication, including video signals, across an ordinary twisted-pair copper phone line, with speeds up to 8 Mbps (megabits per second) downstream (to the customer) and up to 640 Kbps (kilobits per second) upstream. ADSL access to the Internet is offered by some regional telephone companies, offering users faster connection times than those available through connections made over standard phone lines. Also called: asymmetric digital subscriber loop. Compare SDSL.
The data rate from the ISP is greater than the data rate to the ISP. For example, ADSL would deliver 6 million bits per second (6Mb/s) to the home, but only 384 thousand bits per second (384Kb/s) from the home to the ISP.
(Asymmetric Digital Subscriber Line)

To accumulate on the surface; of liquids or gases, in chemistry.
To attract and stick to the surface
Attract and hold to surface (minute particles of mixture or molecules of gas or liquid).

Plural: adsorbates

A material that has been or is capable of being adsorbed.
The material being removed by the adsorption process