( ( A ( related term ) ) ( ( ( ( is endothermy ) , ) ( meaning ( that ( ( an organism ) ( ( generates ( their ( own heat ) ) ) ( to ( maintain ( body temperatures ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT A) (VBN related) (NN term)) (VP (VBZ is) (ADVP (RB endothermy)) (, ,) (S (VP (VBG meaning) (SBAR (IN that) (S (NP (DT an) (NN organism)) (VP (VBZ generates) (NP (PRP$ their) (JJ own) (NN heat)) (S (VP (TO to) (VP (VB maintain) (NP (NN body) (NNS temperatures))))))))))) (. .)))
A related term is endothermy , meaning that an organism generates their own heat to maintain body temperatures.
(ROOT (S (NP (DT The) (NN term)) (ADVP (RB endothermy)) (VP (VBZ means) (S (VP (VBG controlling) (NP (NN body) (NN temperature)) (PP (IN within) (NP (NP (DT a) (JJ narrow) (NN range)) (PP (IN from) (NP (DT the) (NN inside))))) (PP (IN through) (NP (JJ biochemical) (CC or) (JJ physical) (NNS means)))))) (. .)))