"tropic" is a perfectly acceptable and correct word in English
You would use it as an adjective to describe something that is occurring within the tropics, such as the Tropic of Cancer, or an area near the equator. For example, you could say, "The tropic climate of the island is perfect for growing bananas."
(Lesbians in Muslim countries tend to have an easier time: in Iran they are sentenced to death only on the fourth conviction).In this section Straight but narrow Beaten but unbowed Hot tropic ReprintsGay life in the open in Muslim-majority countries is rare, but the closet is spacious.
Excluding the World Bank's money, mostly loans to middle-income countries, giving is nearly flat.In this section Straight but narrow Beaten but unbowed Hot tropic ReprintsThe whiff of mismanagement has lowered spirits too.
Functional analysis of these hormones also is difficult, for the targets of certain hormones of the adenohypophysis, called tropic, or trophic, hormones, are other endocrine glands.
The action of such tropic hormones can be understood only in the light of the mode of function of the endocrine glands they regulate.
The signal for an endocrine gland to secrete more or less of its hormone is related to the concentration of some substance, either a hormone that influences the function of the gland (a tropic hormone), a biochemical product (e.g., glucose), or a biologically important element (e.g., calcium or potassium).
As already mentioned for ACTH, the secretions of tropic hormones from the adenohypophysis are controlled by bloodstream levels of the hormones secreted by their target glands; the hormones of the target glands may act directly on specific adenohypophysial cells or indirectly by influencing the output of releasing factors from the hypothalamus.
Thus, these fishes may rely on neurohormones as well as neurotransmitters for stimulating or inhibiting the release of tropic hormones.
The pituitary glands of all vertebrates produce essentially the same tropic hormones: thyrotropin (TSH), corticotropin (ACTH), melanotropin (MSH), prolactin (PRL), growth hormone (GH), and one or two gonadotropins (usually FSH-like and LH-like hormones).
The obliquity of the ecliptic is the angle between the celestial equator and the tropic of Cancer.
Most tropic movements are orthotropic; i.e., they are directed toward the source of the stimulus.
