For reactions involving oxygen, the gain of oxygen implies the oxidation of the atom or molecule to which the oxygen is added (and the oxygen is reduced). In organic compounds, such as butane or ethanol, the loss of hydrogen implies oxidation of the molecule from which it is lost (and the hydrogen is reduced).
In Ethiopian Orthodoxy, fasting (tsome) lasts for 55 continuous days before Easter (Fasika), although the fast is divided into three separate periods: Tsome Hirkal, eight days commemorating an early Christian figure; Tsome Arba, forty days of Lent; and Tsome Himamat, seven days commemorating Holy Week.
Chris Salvo / Getty Images. Lent is the Christian season of preparation before Easter. In Western Christianity, Ash Wednesday marks the first day, or the start of the season of Lent, which begins 40 days prior to Easter (Sundays are not included in the count). Lent is a time when many Christians prepare for Easter by observing a period of fasting, repentance, moderation and spiritual discipline. The purpose is to set aside time for reflection on Jesus Christ-his suffering and his sacrifice, his life, death, burial and resurrection. Not all Christian churches observe Lent.