Pronunciation: [t͡ʃˈale͡ɪz] (IPA) 
The spelling of the word "Chalaze" follows the IPA transcription of /kəˈleɪzi/. The first syllable is pronounced with a short "u" sound followed by a soft "c" sound. The second syllable has a long "a" sound, a "z" sound, and an "ee" sound at the end. Chalaze refers to a structure found in plant seeds that helps suspend the embryo inside the seed. This word is often used in botanical studies and research.
Chalaze refers to a tiny, thread-like structure found in the anatomy of various organisms, particularly in plant and animal species. Specifically, it commonly describes a component of an egg, seed, or spore that helps to anchor and position the reproductive structure.
In plants, a chalaze is an extension of the integument, the outer protective layer of an ovule, which encloses and nurtures the developing embryo. It connects the ovule to the ovary wall or placenta, aiding in nutrient absorption and carrying substances between the embryo and parent plant. Additionally, the chalaze plays a vital role in the orientation of the embryo within the seed.
In animal physiology, a chalaze is present in certain organisms such as birds and reptiles. It is a structure appearing as a small, twisted cord at the wider end of an egg, opposite the sharp end (or animal pole). Along with the yolk sac, the chalaze anchors the developing embryo within the eggshell, thereby preventing excessive movement which could potentially harm or damage the embryo.
Overall, chalazes serve as essential structural components in the reproductive processes of plants and animals. They fulfill various roles, including support, attachment, orientation, and nutrient exchange, contributing to the successful development and reproduction of organisms.
The etymology of the word "chalaze" is derived from the Greek word "khalaza", which means "hailstone" or "small round object". It refers to the small, twisted, rope-like structure that attaches the yolk to the inner membrane of an egg. The term "chalaze" was first introduced in the early 19th century.
