Pronunciation: [pˈɪks ˌʌp ˈɒn] (IPA) 
The phrase "picks up on" is spelled with a few tricky sounds. The "p" at the beginning is easy enough, but then we have the "icks" part. This is pronounced with a short "i" sound, followed by a "ks" sound, which is made by having the back of your tongue close to the roof of your mouth. Finally, we have the "on" at the end, which is pronounced with a short "o" sound and an "n" sound. Overall, it's a bit of a mouthful!
Picks up on is a phrasal verb that has multiple meanings depending on the context in which it is used.
One possible definition of picks up on is related to perception or understanding. In this context, it refers to someone noticing or comprehending something that may not be explicitly stated. It suggests an ability to detect subtle cues or hints and to grasp the underlying meaning or intention behind a conversation or situation. For example, if someone says something sarcastic, a person who picks up on it quickly recognizes the hidden intention and understands that it is not meant to be taken literally.
Another definition of picks up on is related to improvement or progress. In this sense, it refers to someone becoming better at something over time or making advancements. For instance, in learning a new skill, a person who picks up on it easily is quick to understand and apply the principles, showing steady progress and improvement.
Additionally, picks up on can also be synonymous with notice or observe. It implies being attentive and noticing details or changes in a particular situation. For example, if someone picks up on a change in someone's behavior, it means that they have observed and recognized the alteration.
Overall, picks up on carries the connotation of perception, comprehension, progress, or observation, depending on the specific context in which it is utilized.
