âTo the left of the pedestrian gate, which is wooden, is a mesh gate, and that had been cut,â testified Bloom.
Freebase (0.00 / 0 votes) Rate this definition: Intrathecal. Intrathecal is an adjective that refers to something introduced into or occurring in the space under the arachnoid membrane of the brain or spinal cord. For example, intrathecal immunoglobulin production means production of this substance in the spinal cord.
intracellular fluid (ICF) Etymology: L, intra + cella, storeroom, fluere, to flow. a fluid within cell membranes throughout most of the body, containing dissolved solutes that are essential to electrolytic balance and to healthy metabolism. Also called intracellular water. Compare extracellular fluid, interstitial fluid, lymph, plasma.