( ( ( Millibar - ) ( ( A ( metric unit ) ) ( of ( atmospheric pressure ) ) ) ) . )
(ROOT (NP (NP (NNP Millibar)) (: -) (NP (NP (DT A) (JJ metric) (NN unit)) (PP (IN of) (NP (JJ atmospheric) (NN pressure)))) (. .)))
Millibar- A metric unit of atmospheric pressure.
(ROOT (S (NP (NNP Millibar)) (VP (VBZ is) (NP (NP (DT the) (NN unit)) (VP (VBN used) (S (VP (TO to) (VP (VB measure) (NP (NN air) (NN pressure)))))))) (. .)))