The spelling of the word "tervalence" is actually a mistake. The correct spelling is "covalence". The IPA phonetic transcription for "covalence" is /koʊveɪləns/. The word refers to the chemical bond between two atoms that share a pair of electrons. This type of bond is commonly found in molecules such as H2O and CO2. It is important to use correct spellings in scientific contexts to avoid confusion and ensure accurate communication.