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barn (b),

A unit of area for effective cross-section of atomic nuclei with respect to atomic projectiles; equal to 10-24 cm2.
[fr. "big as the side of a barn" by humorous comparison with much smaller areas]
A unit of area—10–24 cm2—for the effective cross-section of atomic nuclei; barns indicate the cross-sectional area in which atomic, nuclear, and particle interactions occur


Bilateral acute retinal necrosis Ophthalmology A condition characterized by herpes virus-induced anterior and posterior uveitis, papillitis with retinal detachment 1-3 months after onset, of which only 50% are bilateral. See Herpes.
References in periodicals archive ?
'We are excited to share our Fantastic Beasts collection,' said Allison Spampanato, Senior Vice President of Product Development, Pottery Barn Teen.
Also, as a part of the transaction, Boot Barn purchased inventory, entered into a new lease with the store's landlord and offered employment to the G.&L Clothing team.
It will be free to attend, although donations to the Shropshire Barn Owl Group will be welcomed.
Hay no longer would be stored near where district-owned horses and ponies are stabled if the barn were built.
"Barn owls are in serious trouble so if you give a hoot, please donate today."
Logan McGrath (Barn) vs Lewis Dellworth (Broxburn).
The main frame and completed barn were restored to their original design.
The application seeks permission for the conversion of redundant farm buildings into five holiday lets, as well as the demolition of a dilapidated steel-framed barn and the erection of a new barn, on land west of Swarland East House, off Park Road, Swarland.
Last Friday, the fifth level of the department store was arranged into different vignettes, using key pieces from the Spring-Summer 2019 collections of Pottery Barn, Pottery Barn Kids, and West Elm.
The municipality has been raising awareness among barn owners to educate them about the importance to abide by the laws, as their livestock - such as cows and camels - can pose hazard if they venture out on the street.
"As a former volunteer firefighter who has witnessed the devastation caused by barn fires, I am always saddened to hear when we face these kinds of losses on our farms," said Ernie Hardeman, Minister of Agriculture, Food and Rural Affairs.