Vocabulary Word
Word: rudimentary
Definition: elementary; not developed; crude; N. rudiment: fundamental element or principle; Ex. rudiments of the language
Definition: elementary; not developed; crude; N. rudiment: fundamental element or principle; Ex. rudiments of the language
Sentences Containing 'rudimentary'
In some other genera they are present, but in a rudimentary condition.
The abstract improbability of such a tendency being transmitted through a vast number of generations, is not greater than that of quite useless or rudimentary organs being similarly transmitted.
Rudimentary organs, from being useless, are not regulated by natural selection, and hence are variable.
The webbed feet of the upland goose may be said to have become almost rudimentary in function, though not in structure.
In Ononis columnae five of the alternate stamens are rudimentary; and in some species of Viola three stamens are in this state, two retaining their proper function, but being of very small size.
A structure which has been developed through long-continued selection, when it ceases to be of service to a species, generally becomes variable, as we see with rudimentary organs; for it will no longer be regulated by this same power of selection.
Smith has observed, the larger workers have simple eyes (ocelli), which, though small, can be plainly distinguished, whereas the smaller workers have their ocelli rudimentary.
MUTUAL AFFINITIES OF ORGANIC BEINGS: MORPHOLOGY--EMBRYOLOGY--RUDIMENTARY ORGANS.
No one will dispute that the rudimentary teeth in the upper jaws of young ruminants, and certain rudimentary bones of the leg, are highly serviceable in exhibiting the close affinity between Ruminants and Pachyderms.
Robert Brown has strongly insisted on the fact that the position of the rudimentary florets is of the highest importance in the classification of the Grasses.
Rudimentary structures on this view are as good as, or even sometimes better than other parts of the organisation.
It would be impossible to name one of the higher animals in which some part or other is not in a rudimentary condition.
In the mammalia, for instance, the males possess rudimentary mammae; in snakes one lobe of the lungs is rudimentary; in birds the "bastard-wing" may safely be considered as a rudimentary digit, and in some species the whole wing is so far rudimentary that it cannot be used for flight.
Rudimentary organs sometimes retain their potentiality: this occasionally occurs with the mammae of male mammals, which have been known to become well developed and to secrete milk.
So again in the udders of the genus Bos, there are normally four developed and two rudimentary teats; but the latter in our domestic cows sometimes become well developed and yield milk.
In regard to plants, the petals are sometimes rudimentary, and sometimes well developed in the individuals of the same species.
Again, an organ may become rudimentary for its proper purpose, and be used for a distinct one: in certain fishes the swim-bladder seems to be rudimentary for its proper function of giving buoyancy, but has become converted into a nascent breathing organ or lung.
Rudimentary organs, on the other hand, are either quite useless, such as teeth which never cut through the gums, or almost useless, such as the wings of an ostrich, which serve merely as sails.
It is, however, often difficult to distinguish between rudimentary and nascent organs; for we can judge only by analogy whether a part is capable of further development, in which case alone it deserves to be called nascent.
It is also, I believe, a universal rule, that a rudimentary part is of greater size in the embryo relatively to the adjoining parts, than in the adult; so that the organ at this early age is less rudimentary, or even cannot be said to be in any degree rudimentary.
Hence rudimentary organs in the adult are often said to have retained their embryonic condition.
In works on natural history, rudimentary organs are generally said to have been created "for the sake of symmetry," or in order "to complete the scheme of nature."
Can we suppose that rudimentary teeth, which are subsequently absorbed, are beneficial to the rapidly growing embryonic calf by removing matter so precious as phosphate of lime?
Thus we can understand the greater size of rudimentary organs in the embryo relatively to the adjoining parts, and their lesser relative size in the adult.
Rudimentary organs may be compared with the letters in a word, still retained in the spelling, but become useless in the pronunciation, but which serve as a clue for its derivation.
The importance of embryological characters and of rudimentary organs in classification is intelligible, on the view that a natural arrangement must be genealogical.
Nature may be said to have taken pains to reveal her scheme of modification, by means of rudimentary organs, of embryological and homologous structures, but we are too blind to understand her meaning.
Rudimentary organs will speak infallibly with respect to the nature of long-lost structures.
'After all, the sanitation and the agriculture of to-day are still in the rudimentary stage.
The editor, while simple to use, was somewhat rudimentary.
Facilities and sanitation were rudimentary and communal. Rents were pitched at between HK$10 and 14, without caps on income.
In botany, a staminode is an often rudimentary, sterile or abortive stamen.
The instructions authorized the creation of sheriff and constable offices and established a rudimentary court system.
project, which has exposed close to 600 high school teachers and thousands of high school students to rudimentary Scheme programming.
Here they would work for a shilling a day and live in rudimentary barracks, with several families having to share a single room.
The second non-feeding stage is a fully legged, with rudimentary feeding structures and a functional spinneret.
In later releases, Minuet included a rudimentary Web browser — a challenge to implement on a 640 KiB real mode PC.
Although featuring rudimentary spelling and painful grammar, Michele Mako, the publisher of Florida Peach Publishing Company, was said to have considered the manuscript.
By now the young man had acquired some rudimentary education.
A rudimentary steam turbine device was described by Taqi al-Din in 1551 and by Giovanni Branca in 1629.
Brakes were at best rudimentary and the only real safe-guard against mishap was the skill of the driver.
The rudimentary bell-ringing communication was eventually replaced by electronic radio communication methods.
He has a up-tempo, club oriented, catchy yet rudimentary melodic hip hop production style.
Rudimentary paracrine signalling pathways that are vital for communication between the follicle and oocyte are formed.
The page views and visits are still commonly displayed metrics, but are now considered rather rudimentary.
Conway Morris classified the Burgess Shale fossil "Pikaia" as a chordate because it had a rudimentary notochord, the rod of cartilage that evolved into the backbone of vertebrates.
As a simple system of transcription, it can be used with only a rudimentary background in music theory.
By 1995, some fifty-five years after Pipes made his rudimentary congressional race, Republicans had made huge strides in Louisiana.
The original prototype of Salter's duck was made of "a string of floating vanes of rudimentary duck cross-sections linked through a central spine".
This process, usually performed on plasmids, is the basis for rudimentary genetic engineering.
