lbm

1. abbreviationAbbreviation of pound-mass (“unit of mass”).

   On the moon, however the weight of a pound-mass (lb or lbm) is only about one sixth of a pound-force (lbf).

   2000 October 9, Gérard P. Michon, “What is a slug, in the [engineering] weight measurement system?”, in Numericana.com

plural LBMs

1. abbreviationinitialismbiologyInitialism of little brown mushroom: any of a large number of small, dull-coloured agaric species that are difficult to tell apart.

   All LBMs should be avoided as edibles.

   1999, George Barron, Mushrooms of Northeast North America: Midwest to New England, page 209

   2 more examples

   He reached in and pulled out about a dozen mushrooms, shriveled and dried beyond recognition, that could have been Conocybes, Inocybes, Coprini, Psathyrellae, or any of a dozen other kinds of LBMs, mostly inedible, some mildly to seriously toxic, and one, a Galerina, deadly poisonous.

   1986, Sarah Ann Friedman, Celebrating the Wild Mushroom: A Passionate Quest, page 139

   LBMs lack truly distinctive features that set them apart from the crowd, just like most Psilocybe mushrooms.

   2010, Greg A. Marley, Chanterelle Dreams, Amanita Nightmares: The Love, Lore, and Mystique of Mushrooms, page 177

2. abbreviationinitialismmedicineInitialism of long bone metastases.

   Long bone metastases (LBM) are a common occurrence in patients with advanced cancer, arising in up to 70% of patients with advanced disease.

   2018, J.J. Willeumier et al., “An Easy-to-Use Prognostic Model for Survival Estimation for Patients with Symptomatic Long Bone Metastases”, in The Journal of Bone & Joint Surgery, volume 100, number 3, page 196

3. abbreviationinitialismInitialism of lattice Boltzmann method.
4. PhilippinesabbreviationinitialismInitialism of loose bowel movement: diarrhea.