The spelling of "letted flow" may seem odd at first glance, but it is actually a correct form of the past tense of the verb "let flow". The pronunciation of this phrase can be broken down using IPA phonetic transcription as /ˈlɛtɪd floʊ/. The main thing to note is that the "-ed" at the end of "let" is pronounced as /ɪd/ due to the final consonant being a "t". This results in the somewhat unusual spelling of "letted flow".
"Letted flow" is a phrase that does not have an established meaning in the English language. "Letted" is an archaic and obsolete form of the verb "let," an action word that typically means to allow, permit, or enable something. The term "flow" generally refers to the movement or progress of a substance, usually a liquid, gas, or even abstract concepts like ideas or emotions. It implies the continuous and steady motion or progression of these elements.
However, the specific phrase "letted flow" does not hold a standardized definition or widely recognized usage. As a result, it is difficult to provide a comprehensive dictionary definition for the term. It is possible that the phrase is a typographical or grammatical error, or it may be a newly coined phrase with limited usage or found in a specific context, such as a regional dialect, literature, or technical jargon. Without further information or explicit context, it is challenging to define the meaning of "letted flow" accurately.