Pronunciation: [mˈɒnə͡ʊtɹˌiːm] (IPA) 
Monotreme is a term used to describe a type of mammal that lays eggs. The spelling of the word is coined from two Greek words, "monos" meaning alone or single, and "trema" meaning hole or opening. The correct pronunciation of monotreme is /ˈmɒnətriːm/. The first syllable is pronounced like "mon" in "money", and the second syllable is pronounced like "o" in "octopus". The last syllable is pronounced like "tree" and "m" together.
Monotremes are a unique group of mammals that possess certain distinct characteristics. They are the most primitive and primitive surviving group of mammals, often referred to as egg-laying mammals. The word "monotreme" originates from the Greek words "monos," meaning single or one, and "trema," meaning a hole or aperture. It refers to the single opening called a cloaca, which these creatures possess for excretion and reproduction.
Monotremes are primarily found in Australia and New Guinea and consist of only five extant species, namely the platypus and four species of echidnas. They are characterized by their ability to lay eggs, as opposed to giving birth to live young like most other mammals. These eggs are later hatched, leading to the birth of tiny, underdeveloped young. In addition to their unique reproductive system, monotremes also possess other distinct features. For instance, they have a leathery beak-like mouth and lay eggs that lack a true shell.
These mammals are generally small in size and possess several reptilian and mammalian traits. Monotremes are known to have a unique combination of reptilian characteristics, such as laying eggs, as well as mammalian attributes, including production of milk to nourish their young. Despite being classified as mammals, monotremes lack nipples to dispense milk. Instead, milk is secreted through specialized areas on their bellies, which the offspring then lap up.
Overall, monotremes are fascinating creatures that exhibit a blend of primitive and advanced characteristics, making them a truly unique group among mammals.
One of the monotremata, or monotrematous animals.
Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874.
The word "monotreme" comes from two Greek words: "monos", meaning "single" or "sole", and "trema", meaning "hole" or "opening". The term was coined in the early 19th century to describe a unique group of mammals that have a single duct, called a cloaca, through which they excrete waste and lay eggs. The monotremes are egg-laying mammals, known for possessing several primitive characteristics and diverging from other mammals early in evolution.
