olemus
teabe hankimise vahend, mis on uuritavaga
ajutises füüsilises või loogilises kokkupuutes,
sealhulgas ka infoobjekt

Merriam-Webster, noun:
2a: any of various testing devices or substances: such as
(1): a pointed metal tip for making electrical contact with a circuit element being checked
(2): a usually small object that is inserted into something so as to test conditions at a given point
(3): a device used to penetrate or send back information especially from outer space or a celestial body
(4): a device (such as an ultrasound generator) or a substance (such as radioactively labeled DNA) used to obtain specific information for diagnostic or experimental purposes

näiteid
https://en.wikipedia.org/wiki/Uncrewed_spacecraft#Space_probes_and_observatories
https://en.wikipedia.org/wiki/Test_probe

vt ka
- avastussond
- ping
- skaneeriv sondmikroskoopia
- sondeerima (1)
- sondeerima (2)
- sondiuputus
- surmasond