Definition

Noun: - A specific period of pregnancy, defined in medical and developmental contexts as extending from the beginning of the 13th week to the end of the 27th week of gestation. This middle phase follows the first trimester and precedes the third trimester.

Usage

• The term "second trimester" is used to describe and discuss the developmental stage of a pregnancy. It is a standard medical and colloquial term.
• It functions as a countable noun, often used with articles like "the" or "a."

Examples

Advanced Usage

• "well into the second trimester": Used to indicate a point significantly advanced within this period (e.g., 20+ weeks).
  • She didn't announce her pregnancy until she was well into the second trimester.
• The concept is central to prenatal care schedules, which are organized around trimestral milestones.

Variants and Related Words

• Trimester: (Noun) Any one of the three approximately three-month periods into which a human pregnancy is divided.
• First trimester: (Noun) The period from week 1 to the end of week 12 of gestation.
• Third trimester: (Noun) The period from week 28 until birth.

Synonyms

• Mid-pregnancy: A less formal, descriptive term for this general period.
• Middle trimester: A direct synonym, though "second trimester" is the far more common clinical term.

Notes on Meaning

• The "second trimester" is often associated with specific fetal developments (e.g., organ maturation, movement) and maternal changes (e.g., visible baby bump, increased appetite).
• While the definition is based on gestational weeks, in casual use, it may be loosely referred to as "months 4, 5, and 6" of pregnancy.

Noun

1. time period extending from the 13th to the 27th week of gestation