course course of study
course of instruction
class | education imparted in a series of lessons or meetings, he took a course in basket weaving, flirting is not unknown in college classes |
| art class | a class in which you learn to draw or paint |
| childbirth-preparation class | a course that teaches pregnant women to use breathing and concentration and exercise techniques to use during labor |
| life class | an art class using a live human model |
shop class
shop | a course of instruction in a trade (as carpentry or electricity), I built a birdhouse in shop |
class struggle
class war
class warfare | conflict between social or economic classes (especially between the capitalist and proletariat classes) |
class action
class-action suit | a lawsuit brought by a representative member of a large group of people on behalf of all members of the group |
course session
class period
recitation | a regularly scheduled session as part of a course of study |
Schizomycetes
class Schizomycetes | a former classification |
class Cyanobacteria
Cyanophyceae
class Cyanophyceae | photosynthetic bacteria found in fresh and salt water, having chlorophyll a and phycobilins, once thought to be algae: blue-green algae |
Sarcodina
class Sarcodina | characterized by the formation of pseudopods for locomotion and taking food: Actinopoda, Rhizopoda |
Ciliata
class Ciliata
Ciliophora
class Ciliophora | class of protozoa having cilia or hairlike appendages on part or all of the surface during some part of the life cycle |
Chrysophyceae
class Chrysophyceae
Heterokontae
class Heterokontae | all the yellow-green algae having flagella of unequal length |
Xanthophyceae
class Xanthophyceae | yellow-green algae |
Bacillariophyceae
class Bacillariophyceae
Diatomophyceae
class Diatomophyceae | marine and freshwater eukaryotic algae: diatoms |
Phaeophyceae
class Phaeophyceae | brown algae, mostly marine and littoral eukaryotic algae |
Cyclosporeae
class Cyclosporeae | in more recent classifications superseded by the order Fucales |
Euglenophyceae
class Euglenophyceae | coextensive with the division Euglenophyta |
Chlorophyceae
class Chlorophyceae | algae distinguished chiefly by having flagella and a clear green color, their chlorophyll being masked little if at all by other pigments |
Ulvophyceae
class Ulvophyceae | alternative name for the class Chlorophyceae in some classifications |
Charophyceae
class Charophyceae | in some classifications: contains only the order Charales |
Rhodophyceae
class Rhodophyceae | coextensive with the Rhodophyta: red algae |
Mastigophora
class Mastigophora
Flagellata
class Flagellata | protozoa having flagella |
Cryptophyceae
class Cryptophyceae | motile usually brownish-green protozoa-like algae |
Sporozoa
class Sporozoa | strictly parasitic protozoans that are usually immobile, includes plasmodia and coccidia and piroplasms and malaria parasites |
Ascidiaceae
class Ascidiaceae | sometimes classified as an order: sea squirts |
Thaliacea
class Thaliacea | small class of free-swimming tunicates, sometimes classified as an order |
Larvacea
class Larvacea | small free-swimming tunicates, sometimes classified as an order |
Placodermi
class Placodermi | extinct group of bony-plated fishes with primitive jaws |
Chondrichthyes
class Chondrichthyes | cartilaginous fishes |
Aves
class Aves | (ornithology) the class of birds |
amphibia
class Amphibia | the class of vertebrates that live on land but breed in water, frogs, toads, newts, salamanders, caecilians |
Reptilia
class Reptilia | class of cold-blooded air-breathing vertebrates with completely ossified skeleton and a body usually covered with scales or horny plates, once the dominant land animals |
Arachnida
class Arachnida | a large class of arthropods including spiders and ticks and scorpions and daddy longlegs, have four pairs of walking legs and no wings |
Pauropoda
class Pauropoda | an obscure class of minute arthropods with branched antennae and topairs of legs |
Symphyla
class Symphyla | small class of minute arthropods, unimportant except for the garden centipede |
Tardigrada
class Tardigrada | in some classifications considered a separate phylum: microscopic arachnid-like invertebrates living in water or damp moss having pairs of legs and instead of a mouth a pair of stylets or needlelike piercing organs connected with the pharynx |
Chilopoda
class Chilopoda | arthropods having the trunk composed of numerous somites each bearing one pair of legs: centipedes |
Diplopoda
class Diplopoda
Myriapoda
class Myriapoda | arthropods having the body composed of numerous double somites each with two pairs of legs: millipedes |
Merostomata
class Merostomata | used in some classifications, includes the orders Xiphosura and Eurypterida |
Mammalia
class Mammalia | warm-blooded vertebrates characterized by mammary glands in the female |
Hyalospongiae
class Hyalospongiae | sponges with siliceous spicules that have six rays, choanocytes are restricted to finger-shaped chambers |
Scyphozoa
class Scyphozoa | coelenterates in which the polyp stage is absent or at least inconspicuous: jellyfishes |
Hydrozoa
class Hydrozoa | coelenterates typically having alternation of generations, hydroid phase is usually colonial giving rise to the medusoid phase by budding: hydras and jellyfishes |
Anthozoa
class Anthozoa
Actinozoa
class Actinozoa | a large class of sedentary marine coelenterates that includes sea anemones and corals, the medusoid phase is entirely suppressed |
Nuda
class Nuda | ctenophores lacking tentacles, comprises one genus: beroe |
Tentaculata
class Tentaculata | ctenophores have retractile tentacles |
Turbellaria
class Turbellaria | free-living flatworms |
Trematoda
class Trematoda | parasitic flatworms (including flukes) |
Cestoda
class Cestoda | tapeworms |