1M Ohm Thermistor Circuit voltage drops not adding up
simulate this circuit &ndash; Schematic created using CircuitLab

Figure 1. Circuit (drawn using the built-in CircuitLab schematic editor).

If your multimeter DC voltage range has an input of 1 M&Omega; which is typical - although 10 M&Omega; is also common - then you have 1 M&Omega; in parallel with the 1 M&Omega; thermistor giving 500 k&Omega; for the parallel combination. With R1 as shown that creates a 3:1 voltage divider so 1.1 V would be the expected meter reading.