Pronunciation: [pˈat͡ʃi] (IPA) 
The word "pachy" is most commonly spelled with a "y" at the end, rather than an "i" or "ie." This spelling choice is likely due to the root word "pachyderm," which is spelled with a "y," and refers to thick-skinned animals like elephants and rhinos. In IPA phonetic transcription, "pachy" would be pronounced /ˈpæki/, with the stress on the first syllable.
Pachy is a prefix derived from the Greek word "pachýs," meaning thick, dense, or bulky. It is commonly used to form compound words that describe something as having a thick or heavy quality or attribute.
When used as a prefix, pachy often denotes an excessive or abnormal thickness or density. For instance, "pachyderm" refers to any large mammal with thick skin, such as elephants, rhinoceroses, or hippopotamuses, which have considerably thicker skin compared to other animals. Similarly, "pachyosteosclerosis" describes a medical condition characterized by abnormal thickening and hardening of the bones.
In a broader sense, pachy can also be used metaphorically to describe things that are figuratively thick or dense. For example, "pachylography" refers to the excessive use of words or a style of writing that is unnecessarily long-winded or verbose.
In summary, the prefix pachy is used to describe something as being thick, dense, bulky, or excessive. It is commonly employed in scientific and medical terminology to indicate abnormal thickness or density, while its metaphorical use can describe concepts or communication styles characterized by an excessive or exaggerated nature.
The word "pachy" is derived from the Greek word "pakhús" (παχύς), meaning "thick" or "fat". In English, it is commonly used as a prefix to denote thickness, heaviness, or density.
