| Subject | Estonian | English |
| life.sc. | bakterite arv | bacteria content |
| life.sc. | bakterite arv | bacterial count |
| life.sc. | bakterite arv | plate count |
| life.sc. | bakterite arv | colony count |
| gen. | kalendriaasta jooksul riiki külastanud laevade arv | distinct vessel arrival |
| ed. | koolitatavate arv | number of trainees |
| comp., MS | Liikmete arv | Member Count (Number of members (accounts, leads, or contacts) that are included in a marketing list) |
| math. | lubatav praakeelementide arv | tolerance number of defects (partiis) |
| life.sc. | mikroorganismide arv | plate count |
| life.sc. | mikroorganismide arv | colony count |
| fin. | n-arv kõige madalama krediidikvaliteediga positsioone | nth lowest credit quality |
| transp., mil., grnd.forc., tech. | osakeste arv etalonvoolus | particle number sample flow |
| transp., mech.eng. | peaülekande arv | differential ratio |
| comp., MS | pole arv | not a number (A value that represents the result of an invalid calculation) |
| forestr. | pöörete arv minutis | revolutions per minute r.p.m. |
| life.sc. | rakkude arv | cell count |
| nat.sc. | Reynoldsi arv | Reynolds number |
| nat.sc. | Reynoldsi arv | Reynolds parameter |
| nat.sc. | Reynoldsi arv | Re |
| comp., MS | sangade arv | handle count (In Task Manager, the number of object handles in a process`s object table) |
| immigr. | sisserännanute arv kindlal territooriumil, teatud aja seisuga | stock of migrants |
| immigr. | sisserännanute arv kindlal territooriumil, teatud aja seisuga | immigrant population |
| immigr. | sisserännanute arv kindlal territooriumil, teatud aja seisuga | migrant stock |
| transp., avia. | suurim lubatud reisijakohtade arv | maximum passenger seating configuration |
| comp., MS | teatiste arv | notification count (A number in the app bar to indicate that the user needs to take some action (such as an alert or a reminder) or that new activity has occurred (such as new mail)) |
| fin. | tegelik päevade arv | actual/360 |
| chem. | teoreetiliste taldrikute arv | theoretical plate number |
| chem. | teoreetiliste taldrikute arv | number of theoretical plates |
| stat., social.sc., lab.law. | täistööajale taandatud töötajate arv | full-time equivalent |
| stat., hobby | voodikohtade arv | bed places |
| immigr. | välisriigi kodanike arv kindlal territooriumil, teatud aja seisuga | stock of foreigners |
| econ. | õpilaste arv | number of pupils |
| ed. | õppurite arv | number of students |