IPA: /trænˈsmɪsɪvɪti/
KK: /trænˈsmɪsɪvɪti/
A measure of how well a material can allow radiation or water to pass through it.
The transmissivity of the aquifer was tested to determine its ability to supply water.
Transmissivity → It is formed from "trans-" (meaning across) and "mittere" (meaning to send) combined with the suffix "-ivity" (indicating a state or condition). The word "transmissivity" refers to the state or condition of being able to send or transmit something across a medium.
Think of 'sending' ('mittere') something 'across' ('trans-') — that's why transmissivity means the ability to transmit something across.
No commonly confused words.