What's the difference between antedate and foredate?

Antedate

Definition:

(n.) Prior date; a date antecedent to another which is the actual date.
(n.) Anticipation.
(v. t.) To date before the true time; to assign to an earlier date; thus, to antedate a deed or a bond is to give it a date anterior to the true time of its execution.
(v. t.) To precede in time.
(v. t.) To anticipate; to make before the true time.

Example Sentences:

(1) Among women with recurrent genital herpes antedating pregnancy, the mean number of recurrences per trimester increased from 0.97 to 1.26 to 1.63 in the first through third trimester, respectively (p less than 0.05 for comparison between each trimester).
(2) This serendipitous observation antedates clinical signs and symptoms of dysphagia.
(3) Increased sensitivity to pressor agents and activation of the coagulation cascade occur early in the course of preeclampsia, often antedating clinically recognizable disease.
(4) It is estimated that intraventricular haemorrhage develops in 40-50% of infants with a birthweight of 1500 g or less but precisely how many individuals are affected by haemorrhage, or how many cases of disability are antedated by cerebral ischaemia, is not known because of the lack of effective low-cost instruments for the continuous, or at least frequent, assessment of cerebral metabolic status in the high-risk individual.
(5) This is well illustrated by those studies of cannabis that antedated the current concern for pair-feeding and surrogate fostering.
(6) The secretory abnormalities antedated the appearance of the neoplasms and were not caused by obstruction.
(7) To investigate the role of components of the renin-angiotensin-aldosterone system and plasma progesterone concentrations in the pathophysiology of hypertension in pregnancy, sequential measurements were made throughout pregnancy in 45 normotensive subjects, 41 other pregnant patients in whom hypertension became manifest only during pregnancy and 26 patients with chronic hypertension antedating pregnancy.
(8) Synovial sarcoma antedated the carcinoid syndrome in one patient who died; carcinoma of the breast was discovered one year after hemicolectomy in the other.
(9) Absence seizures antedating jerks by many years, myoclonic jerks reported as unilateral, generalized tonic-clonic seizures occurring during sleep and focal EEG abnormalities are other factors contributing to not recognizing JME.
(10) Of eight (19.8%) women who have not become pregnant two (2.7%) had previous infertility problems antedating the development of gestational trophoblastic disease.
(11) An idiopathic nephrotic syndrome associated with membranous glomerulopathy antedated the subsequent emergence of systemic lupus erythematosus in two patients (7-year-old and 14-year-old girls).
(12) In the latter two patients the rise in TLCSA did not antedate the rise in blood neutrophil count, suggesting that blood leukocyte colony-stimulating factor (CSF) per se probably has little biologic significance.
(13) Several reports are cited in which the onset of diabetes mellitus in middle-aged patients antedated by a short time the onset of clinically recognizable pancreatic carcinoma.
(14) Patient 1 also showed defective cellular immunity to Candida antigen which was reversed by treatment with ketoconazole and levamisole, antedating clinical improvement.
(15) The activity of many of these cells antedated CRs by 20-200 ms. A smaller proportion of cells exhibited inhibition of simple spike activity that antedated CRs.
(16) Fibrinoid necrosis and disruption of major arteries as well as veins were observed immediately after impact, antedating the evolution of parenchymal necrosis.
(17) This latter observation antedated the clinical observation that primary aldosteronism is accompanied by hypercalciuria.
(18) Antedating and outranking all those is the inherent tendency of the universal contractile chamber to rupture and spill its contents, especially when mural labors encounter sphincteric intransigence.
(19) This suggests the presence of a "rheumatoid diathesis" which long antedates the expression of the disease.
(20) The divergence of the methanogenic bacteria from other bacteria may be the most ancient phylogenetic event yet detected--antedating considerably the divergence of the blue green algal line for example, from the main bacterial line.