(n.) A hard and sharp-pointed projection from a woody stem; usually, a branch so transformed; a spine.
(n.) Any shrub or small tree which bears thorns; especially, any species of the genus Crataegus, as the hawthorn, whitethorn, cockspur thorn.
(n.) Fig.: That which pricks or annoys as a thorn; anything troublesome; trouble; care.
(n.) The name of the Anglo-Saxon letter /, capital form /. It was used to represent both of the sounds of English th, as in thin, then. So called because it was the initial letter of thorn, a spine.
(v. t.) To prick, as with a thorn.
Example Sentences:
(1) But the outspoken journalist and human rights activist has long been a thorn in Ali Abdullah Saleh's side, agitating for press freedoms and staging weekly sit-ins to demand the release of political prisoners from jail – a place she has been several times herself.
(2) Daballen navigates the jeep between thorn bushes and over furrows, guided by a rising moon and his intimate knowledge of the terrain.
(3) Adoption and fostering: ‘The best thing you have ever done’ Read more The process of adopting disabled children was much harder when she first did it in the 1980s, Thorn says, adding that people tended to be bemused as to why any parent would volunteer for the additional work involved in bringing up children with varying needs.
(4) Puncture wounds were cuased in 9 patients by sea urchin spines and 1 patient by a date palm thorn.
(5) Supporters said they were not surprised she had been let go as she had become “a thorn in the flesh” of the DfE after speaking out against government policies.
(6) The call by Denmark’s prime minister, Helle Thorning-Schmidt, for the country to stand together echoes the Norwegian response after the massacre at Utøya .
(7) Sperm motion was analysed using the Hamilton-Thorn system before and after incubation and treatment.
(8) Three cases are reported in which pseudotumours developed in the hand following injury by oil palm thorns.
(9) Since becoming Denmark's first female prime minister two years ago, Thorning-Schmidt has had to contend with the media nickname of "Gucci Helle", so called because of her fondness for designer clothes.
(10) Wyden and Udall have been thorns in the side of the intelligence community, using their position on the committee, which permits them privileged access to classified briefings, to repeatedly challenge senior officials on the accuracy of their public testimony.
(11) He said police reports in Sweden showed SW had told a friend, Marie Thorn, that she felt police and others around her "railroaded her" into pressing charges.
(12) Although reviewers' letters may be considered an unnecessary thorn in the side, the improved practice that has resulted from these efforts gives strong support to their continued activities.
(13) In layers V and VI they mainly contact with the dendrite trunks and with the nervous cell bodies and more rarely with thorns.
(14) They gradually displayed active membrane pseudopodia, thorn-like processes and petal-like ruffles after 2 h to 4 h of cultivation.
(15) Other names circulating in EU capitals for the top commission job include the Irish prime minister, Enda Kenny, the outgoing Finnish prime minister on the centre-right, Jyrki Katainen, and the Danish prime minister on the centre-left, Helle Thorning-Schmidt.
(16) Across this relatively peaceful corner of the Horn of Africa, where black-headed sheep scamper among the thorn bushes, dainty gerenuk balance on their hind legs to nibble from hardy shrubs, and skinny camels wearing rough-hewn bells lumber over rocky slopes, people long accustomed to a harsh environment find they cannot cope after years of below-average rainfall.
(17) Synovectomy and removal of the plant thorn usually results in normal joint function.
(18) But, as Aimee Thorne-Thomsen, the vice president for strategic partnerships at Advocates for Youth, wrote in 2010 , rather than focus on if abortion is rare enough to make enough people comfortable, "What if we stopped focusing on the number of abortions and instead focused on the women themselves?"
(19) One teacher, who was hiding in a closet in the math lab, heard Thorne yell, "Put the gun down!"
(20) Based on a correlative radiographic and histologic slab study of the wrists in 50 infants who died of unrelated diseases, the author's chief conclusions are as follow: 1) On the wrist radiograph of the infant, bone bark in the Ranvier's groove may appear as a "thorn-like" bony process on the margins of the metaphysis of the radius and ulna.
Trichome
Definition:
(n.) A hair on the surface of leaf or stem, or any modification of a hair, as a minute scale, or star, or gland. The sporangia of ferns are believed to be of the nature of trichomes.
Example Sentences:
(1) Thus, the genetically conditioned decision of a specific cell to differentiate either a chaeta or a trichome is made during the growth of the wing imaginal disc and is transmitted clonally to descendant cells.
(2) The work shows some distinct differences in trichome morphology as well as variation in their development, due to the effect of indole-3-acetic acid (IAA).
(3) The saturated anacardic acid (C22:0 sat), abundant in the trichome exudate of susceptible strains, was nearly as inhibitory toward both prostaglandin endoperoxide synthase and lipoxygenase as the omega 5-unsaturated compound.
(4) These hormogonia were characterized in terms of their morphology, state of differentiation of the cells, optimal temperature for production and motility, minimal nutritional requirements to sustain motility, liberation of the hormogonium from its parental trichome, average surface velocity, and maximal concentration of agar through which the hormogonium may move.
(5) The characteristics of the growth curve of the organism showed that its growth in shake cultures is by increasing trichome number up to approximately 15 hr and by increasing trichome length after 15 hr.
(6) Illumination of a single cell in the P. uncinatum trichome gives rise to quenching of the fluorescence in this cell and usually in one or two neighbor cells, whereas the rest of trichome remains fluorescing.
(7) Also, this species shows more specialized foliar trichomes which permit the uptake of water and possibly of nutrients.
(8) Previously, we reported that hapten-immune animals showed increased collagen deposition as identified on routine paraffin fixed slides that were stained with Masson's trichome.
(9) The source of the epidemic are the strong sensitizing sesquiterpene lactones parthenin, ambrosin and others, which are highly concentrated in the trichomes of the plant.
(10) changed morphology from rods of about 6 to 8 microns long to multicellular filaments (unsheathed trichomes) up to many hundreds of micrometres long with the addition of glycine or certain D-amino acids to the growth medium.
(11) The putative GL1 promoter directs the expression of the GUS reporter gene in non-trichome-bearing structures that appear to be stipules.
(12) Histochemical localization of the reporter gene product suggests that the as-2 tetramer directs expression in trichomes, vascular elements, and epidermal and mesophyll cells.
(13) It is concluded ethylrhodamine can be used to monitor the power transmission which was previously demonstrated by microelectrode studies of the cyanobacterial trichomes.
(14) The construction of cell hairs (trichomes) on the wings of Drosophila occurs in synchrony on 30,000 cells over a period of about 20 hr.
(15) Haematoxylin and Eosin, Masson's Trichome, and high iron diamine Alcian blue staining was done in all the cases.
(16) A scanning electron microscopic study of trichome morphology of bean embryo, growing in semi-solid synthetic medium, has been undertaken.
(17) In young expanding leaves, P2 protein is concentrated in palisade cells and in epidermal trichomes.
(18) In certain trichomes, several "dark" cells appear during the storage of the trichomes without energy sources.
(19) The GL1 gene is required for the initiation of differentiation of hair cells (trichomes) on the crucifer, Arabidopsis thaliana.
(20) Very similar inhibition was seen with the crude exudate, rich in omega 5-anacardic acids, from glandular trichomes of an arthropod-resistant strain of geranium, Pelargonium xhortorum.