termometr

/termometr/

Cases

SingularPluralWhen to use it
nominativetermometrthe thermometertermometrlethe thermometersthe plain dictionary form — the doer of the sentence
genitivetermometrnithe thermometer'stermometrlenithe thermometers'the owner — whose it is
accusativetermometrnithe thermometer (as the object)termometrlenithe thermometers (as the object)a specific, known object — whom or what
dativetermometrgeto the thermometertermometrlegeto the thermometersdirection or recipient — to where, to whom
locativetermometrdeat / in the thermometertermometrledeat / in the thermometerswhere it is; also having — mende bar, "I have it"
ablativetermometrdenfrom the thermometertermometrledenfrom the thermometerswhere it comes from; also "than" when comparing
When to use each case
nominative
the plain dictionary form — the doer of the sentence
genitive
the owner — whose it is
accusative
a specific, known object — whom or what
dative
direction or recipient — to where, to whom
locative
where it is; also having — mende bar, "I have it"
ablative
where it comes from; also "than" when comparing

The endings are the same ones the pronouns wear — that page explains when each case is used.

With an owner

One ownedSeveral owned
mytermometrimmy thermometertermometrlerimmy thermometers
yourtermometringyour thermometertermometrleringyour thermometers
his / hertermometrihis / her thermometertermometrlerihis / her thermometers
ourtermometribizour thermometertermometrleribizour thermometers
you all'stermometrigizyou all's thermometertermometrlerigizyou all's thermometers
theirtermometrleritheir thermometertermometrleritheir thermometers

The overlap in the last rows is real, not a mistake: termometrleri can mean "his / her thermometers", "their thermometer", or "their thermometers" — context decides.