#phase.time_period__stage  any distinct time period in a sequence of events; "we are in a transitional stage in which many former ideas must be revised or rejected"
  supertype:  time_period__period__period_of_time  an amount of time; "a time period of 30 years"; "hastened the period of his recovery"
  subtype:  diakinesis  the final stage of the prophase of meiosis
  subtype:  diplotene  the fourth stage of the prophase of meiosis
  subtype:  leptotene  the first stage of the prophase of meiosis
  subtype:  pachytene  the third stage of the prophase of meiosis
  subtype:  phase_of_cell_division  a stage in meiosis or mitosis
     subtype:  anaphase  the stage of meiosis or mitosis when chromosomes move toward opposite ends of the nuclear spindle
     subtype:  metaphase  the second stage of mitosis
     subtype:  metaphase.phase_of_cell_division  the second stage of meiosis
     subtype:  prophase  the first stage of mitosis
     subtype:  prophase.phase_of_cell_division  the first stage of meiosis
     subtype:  telophase  the final stage of mitosis
     subtype:  telophase.phase_of_cell_division  the final stage of meiosis when the chromosomes move toward opposite ends of the nuclear spindle
  subtype:  zygotene  the second stage of the prophase of meiosis
  subtype:  anal_stage__anal_phase  (psychoanalysis) the second sexual and social stage of a child's development during which bowel control is learned
  subtype:  genital_stage__genitalstage__genital_phase  (psychoanalysis) the fifth sexual and social stage in a person's development occurring during adolescence; interest focuses on sexual activity
  subtype:  latency_stage__latencystage__latency_phase__latencyphase__latency_period__latencyperiod  (psychoanalysis) the fourth period (from about age 5 or 6 until puberty) during which sexual interests are supposed to be sublimated into other activities
  subtype:  oral_stage__oral_phase  (psychoanalysis) the first sexual and social stage of an infant's development; the mouth is the focus of the libido and satisfaction comes from suckling and chewing and biting
  subtype:  phallic_stage__phallicstage__phallic_phase__phallicphase  (psychoanalysis) the third stage in a child's development when awareness of and manipulation of the genitals is supposed to be a primary source of pleasure
  subtype:  chapter.phase  any distinct period in history or in a person's life; "the industrial revolution opened a new chapter in British history"; "the divorce was an ugly chapter in their relationship"
  subtype:  fertile_period__fertileperiod__fertilephase  the time in the menstrual cycle when fertilization is most likely to be possible (7 days before to 7 days after ovulation)
  subtype:  menstrual_phase__menstrualphase  the phase of the menstrual cycle during which the lining of the uterus is shed (the first day of menstrual flow is considered day 1 of the menstrual cycle)
  subtype:  secretory_phase__secretoryphase__luteal_phase  the second half of the menstrual cycle after ovulation; the corpus luteum secretes progesterone which prepares the endometrium for the implantation of an embryo; if fertilization does not occur then menstrual flow begins
  subtype:  apogee.phase__culmination  a final climactic stage; "their achievements stand as a culmination of centuries of development"
  subtype:  seedtime.phase  any time of new development
  subtype:  safe_period  that time during a woman's menstrual cycle during which conception is least likely to occur (usually immediately before of after menstruation)

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