Cotyledon. Definition. noun, plural: cotyledons. (1) (botany) The primary or rudimentary leaf of the embryo of a seed plant that either remains in the seed or emerges upon seed germination; a modified leaf that is part of the plant embryo within the seed; a seed leaf.otyledon. Definition. noun, plural: cotyledons. (1) (botany) The primary or rudimentary leaf of the embryo of a seed plant that either remains in the seed or emerges upon seed germination; a modified leaf that is part of the plant embryo within the seed; a seed leaf.
noun, plural: habitats. (1) Place where an organism or a biological population normally lives or occurs. (2) The location or environment where an organism (or a thing) is most likely to be found, e.g. the body part of the host of a parasite as in the scalp of the host is the habitat of a head louse.
Wiktionary (5.00 / 3 votes) Rate this definition: habitat (Noun). A specific place or natural conditions in which a plant or animal lives. Origin: From habitat (used in Floras and Faunas), from habito.iktionary (5.00 / 3 votes) Rate this definition: habitat (Noun). A specific place or natural conditions in which a plant or animal lives. Origin: From habitat (used in Floras and Faunas), from habito.