Stochastic effect means a health effect that occurs randomly and for which the probability of the effect occurring, rather than its severity, is assumed to be a linear function of dose without threshold. Hereditary effects and cancer incidence are examples of stochastic effects. For purposes of these regulations, "probabilistic effect" is an equivalent term.
Nonstochastic effect means a health effect, the severity of which varies with the dose and for which a threshold is believed to exist. Radiation-induced cataract formation is an example of a nonstochastic effect. For purposes of these regulations, "deterministic effect" is an equivalent term.
IPO Effective Date means the date upon which the Securities and Exchange Commission declares the initial public offering of the Company's common stock as effective.
Amendment No. 4 Effective Date has the meaning assigned to such term in Amendment No. 4.
Amendment No. 5 Effective Date has the meaning set forth in Amendment No. 5.