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v. pre·ex·ist·ed, pre·ex·ist·ing, pre·ex·ists
To exist before (something); precede: Dinosaurs preexisted humans.
To exist beforehand.

pre′ex·is′tence n.
pre′ex·is′tent adj.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Adj.1.preexistent - existing previously or before something; "variations on pre-existent musical themes"
antecedent - preceding in time or order
References in classic literature ?
I must stop, captain; no one can describe the woman he loves save very imperfectly, preexistent mysteries which defy analysis lie between them.
I think, in some preexistent state, he must have been in the higher circles of spirits, and brought all his old court pride along with him; for it was ingrain, bred in the bone, though he was originally of poor and not in any way of noble family.
The latter were preexistent works, not written with the plague in mind but utilized to perform contrition publicly in an appeal to divine grace.
We have often observed that patients reported becoming allergic or experiencing a worsening of their preexistent allergies after their homes flooded during those hurricanes.
Assuming that variables such as irregular astigmatism, perioperative complications, and preexistent macular or corneal anomalies may influence visual acuity at both 1 and 12 months after surgery, it was expected that good visual acuity at 1 month would persist to 12 months.
Therefore, here we compared the ability of OP and VEP models to catch the evolution of mechanical properties of bone tissue during the regenerative process, by analyzing the mechanical characteristics of preexistent and newly formed bone tissue regenerated at 4 and 12 weeks from the implantation of a macroporous hydroxyapatite (HA) scaffold in a preclinical model of critical-size defect.
Secondary skin tumors can develop on preexistent NC, which are usually benign, but malignant neoplasias were also reported in this setting [3, 6].
Both the native radiographs and the computed tomography showed a preexistent scaphotrapezotrapezoidal (STT) arthritis and the configuration of static dorsally intercalated segmental instability (DISI) (Figures 1(a)-1(c)).
Jesus is the self-existent, preexistent, omnipotent, eternal, Creator God.
He taught that God made all things out of nothing and rejected the notion of uncreated, preexistent matter as in Hellenic philosophy.
Similarly, Brandie Siegfried's "God and the Question of Sense Perception in the Works of Margaret Cavendish" approaches these subjects, noting "Cavendish believed Nature to be infinite and agential, made up of preexistent matter; matter, in turn, is both rational and sensitive; and finally, the world as we know it emerged from a mutual regard between God and nature" (67).