Pronunciation: [bˈe͡ɪsəɹˌa͡ɪnə͡l] (IPA) 
The word "basirrhinal" is spelled as /beɪˈsɪrɪn(ə)l/. It is derived from the Greek words "basis" meaning "base" and "rhin" meaning "nose". The "rrh" in the middle of the word is a Greek letter combination that represents the "r" sound. The "n" at the end is pronounced with a nasal sound due to the "in" suffix. This word is used to describe animals with a nose that is wide at the base, such as pigs and tapirs.
Basirrhinal is an adjective that is used to describe an anatomical or physiological characteristic related to the shape or structure of the nose in certain animals. Specifically, it refers to a condition in which the nostrils of an animal are directed forward or downward, as opposed to being tilted upwards or located on the sides of the nose.
This term is commonly used in the field of zoology, especially when studying the nasal structure and function of various mammals. For instance, animals with a basirrhinal nose include most primates, including humans, as well as several other mammal species such as dogs, cats, and horses.
The basirrhinal condition provides certain functional advantages for these animals. It often indicates a well-developed sense of smell, as the forward or downward positioning of the nostrils allows for a better detection and identification of odors in the environment. Furthermore, it can aid in directing airflow more efficiently, facilitating respiration and capturing scent particles.
In summary, basirrhinal refers to the anatomical feature of having forward or downward-facing nostrils. Its occurrence is observed in various animal species and is typically associated with a strong sense of smell and efficient respiratory functions.
Relating to the base of the rhinencephalon.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
The word "basirrhinal" comes from combining two Greek roots: "basi", meaning "base" or "lower part", and "rhinos", meaning "nose". The term is used to describe an anatomical feature related to the nose.
