IPA: /ˌæn.fræk.tʃuˈɑː.sɪ.ti/
KK: /æˌnfrækˈtjuːəsɪti/
A quality or state of being twisted or having many turns and curves.
The anfractuosity of the river made it difficult to navigate.
Anfractuosity is formed from "anfractuosus" (from Latin, meaning winding or full of twists) and the suffix "-ity" (meaning the state or condition of). The word describes the state of being winding or having many twists and turns.
Imagine a path that is 'winding' ('anfractuosus') and think of the '-ity' as indicating a state. This helps you remember that 'anfractuosity' refers to the condition of being full of twists.