Excretory
121flamecell — flame cell n. A hollow cell in the excretory system of certain invertebrates, including flatworms and rotifers, containing a tuft of rapidly beating cilia that serve to propel waste products into excretory tubules. * * * …
122acarid — /ak euh rid/, n. 1. an acarine, esp. a mite of the family Acaridae. adj. 2. of or pertaining to an acarid. [1875 80; ACAR(US) + ID2] * * * ▪ arachnid Introduction any member of the subgroup of the arthropod class Arachnida that includes the …
123amphioxus — /am fee ok seuhs/, n., pl. amphioxi / ok suy/, amphioxuses. Zool. lancelet. [1830 40; < NL: lit., sharp at both ends < Gk amphi AMPHI + oxýs pointed] * * * or lancelet Any of certain small marine chordates (invertebrate subphylum Cephalochordata) …
124animal — animalic /an euh mal ik/, animalian /an euh may lee euhn, mayl yeuhn/, adj. /an euh meuhl/, n. 1. any member of the kingdom Animalia, comprising multicellular organisms that have a well defined shape and usually limited growth, can move… …
125arachnid — arachnidan /euh rak ni deuhn/, adj., n. /euh rak nid/, n. 1. any wingless, carnivorous arthropod of the class Arachnida, including spiders, scorpions, mites, ticks, and daddy longlegs, having a body divided into two parts, the cephalothorax and… …
126bone — /bohn/, n., v., boned, boning, adv. n. 1. Anat., Zool. a. one of the structures composing the skeleton of a vertebrate. b. the hard connective tissue forming the substance of the skeleton of most vertebrates, composed of a collagen rich organic… …
127Bône — /bohn/, n. former name of Annaba. * * * I Rigid connective tissue of vertebrates, consisting of cells embedded in a hard matrix. Bones serve as the body s supporting framework, provide muscle attachment points for movement, protect the internal… …
128crustacean — /kru stay sheuhn/, n. 1. any chiefly aquatic arthropod of the class Crustacea, typically having the body covered with a hard shell or crust, including the lobsters, shrimps, crabs, barnacles, and wood lice. adj. 2. belonging or pertaining to the… …
